Anselm G. Vossen

Journal Article Journal of High Energy Physics · April 1, 2025 We report measurements of the absolute branching fractions,, and, where the latter is measured for the first time. The results are based on a 121.4 fb−1 data sample collected at the Υ(10860) resonance by the Belle detector at the KEKB asymmetric ... Full text Cite

Measurement of the branching fraction and CP -violating asymmetry of the decay B0 →π0π0 using 387 million ϒ (4S) decays in Belle II data

Journal Article Physical Review D · April 1, 2025 We measure the branching fraction and CP-violating flavor-dependent rate asymmetry of B0→π0π0 decays reconstructed using the Belle II detector in an electron-positron collision sample containing 387×106 ϒ(4S) mesons. Using an optimized event selection, we ... Full text Cite

The dRICH detector at the ePIC experiment

Conference Proceedings of Science · March 25, 2025 ePIC will be a general-purpose detector designed to enable the entire physics program of the Electron-Ion Collider (EIC) at BNL, USA. Several key physics measurements depend on efficient Particle Identification (PID). The PID system of ePIC covers a wide p ... Cite

Measurement of the Branching Fraction of $Λ_c^+ \to p K_S^0 π^0$ at Belle

Preprint · March 6, 2025 Link to item Cite

Production cross sections of light and charmed mesons in e+e- annihilation near 10.58 GeV

Journal Article Physical Review D · March 1, 2025 We report measurements of production cross sections for ρ+, ρ0, ω, K∗+, K∗0, φ, η, KS0, f0(980), D+, D0, Ds+, D∗+, D∗0, and Ds∗+ in e+e- collisions at a center-of-mass energy near 10.58 GeV. The data were recorded by the Belle experiment, consisting of 571 ... Full text Cite

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle

Preprint · February 14, 2025 Link to item Cite

Measurement of the branching fraction and $\it CP$-violating asymmetry of the decay $B^{0} \rightarrow π^{0} π^{0}$ using $387$ million bottom-antibottom meson pairs in Belle II data

Preprint · December 18, 2024 Link to item Cite

Artificial Intelligence for the Electron Ion Collider (AI4EIC)

Journal Article Computing and Software for Big Science · December 1, 2024 The Electron-Ion Collider (EIC), a state-of-the-art facility for studying the strong force, is expected to begin commissioning its first experiments in 2028. This is an opportune time for artificial intelligence (AI) to be included from the start at this f ... Full text Cite

Measurement of the e+e− → π+π−π0 cross section in the energy range 0.62–3.50 GeV at Belle II

Journal Article Physical Review D · December 1, 2024 We report a measurement of the e+e− → π+π−π0 cross section in the energy range from 0.62 to 3.50 GeV using an initial-state radiation technique. We use an e+e− data sample corresp ... Full text Cite

Measurement of the inclusive branching fractions for $B_s^0$ decays into $D$ mesons via hadronic tagging

Preprint · November 21, 2024 Link to item Cite

Production cross sections of light and charmed mesons in $e^+e^-$ annihilation near 10.58 GeV

Preprint · November 18, 2024 Link to item Cite

Measurement of $B \to K{}^{*}(892)γ$ decays at Belle II

Preprint · November 15, 2024 Link to item Cite

Test of lepton flavor universality with a measurement of R (D∗) using hadronic B tagging at the Belle II experiment

Journal Article Physical Review D · October 1, 2024 The ratio of branching fractions R(D∗)=B(B→D∗τ-ντ)/B(B→D∗-ν), where is an electron or muon, is measured using a Belle II data sample with an integrated luminosity of 189 fb-1 at the SuperKEKB asymmetric-energy e+e-collider. Data is collected at the I(4S) r ... Full text Cite

Perspectives of Semi-Inclusive Deep-Inelastic Scattering

Conference EPJ Web of Conferences · September 25, 2024 This contribution highlights some topics addressed by current and future experiments in Semi-Inclusive Deep-Inelastic Scattering. We concentrate on the programs at 12 and 22 GeV at Jefferson Lab using the CLAS detector, and at the future Electron-Ion Colli ... Full text Cite

Measurement of Angular Coefficients of B[over ¯]→D^{*}ℓν[over ¯]_{ℓ}: Implications for |V_{cb}| and Tests of Lepton Flavor Universality.

Journal Article Physical review letters · September 2024 We measure the complete set of angular coefficients J_{i} for exclusive B[over ¯]→D^{*}ℓν[over ¯]_{ℓ} decays (ℓ=e, μ). Our analysis uses the full 711 fb^{-1} Belle dataset with hadronic tag-side reconstruction. The results allow us to extract the form fac ... Full text Cite

Search for lepton-flavor-violating τ−→ μ−μ+μ− decays at Belle II

Journal Article Journal of High Energy Physics · September 1, 2024 We present the result of a search for the charged-lepton-flavor violating decay τ− → μ−μ+μ− using a 424 fb−1 sample of data recorded by the Belle II experiment at the SuperKEKB e+e− Full text Cite

Measurement of the branching fractions of B¯ → D()K−KS∗0 and B¯ → D()Ds− decays at Belle II

Journal Article Journal of High Energy Physics · August 1, 2024 We present measurements of the branching fractions of eight B¯0 → D(*)+K−KS∗0, B− → D(*)0K−KS∗0 decay channels. The results are based on data from ... Full text Cite

Search for the decay B0 →γγ using Belle and Belle II data

Journal Article Physical Review D · August 1, 2024 We report the result of a search for the rare decay B0→γγ using a combined dataset of 753×106 BB¯ pairs collected by the Belle experiment and 387×106 BB¯ pairs collected by the Belle II experiment from decays of the ϒ(4S) resonance produced in e+e- collisi ... Full text Cite

Improving Λ Signal Extraction with Domain Adaptation via Normalizing Flows

Conference Proceedings of Science · July 30, 2024 The present study presents a novel application for normalizing flows for domain adaptation. The study investigates the ability of flow based neural networks to improve signal extraction of Λ Hyperons at CLAS12. Normalizing Flows can help model complex prob ... Full text Cite

Determination of $|V_{ub}|$ from simultaneous measurements of untagged $B^0\toπ^- \ell^+ ν_{\ell}$ and $B^+\toρ^0 \ell^+ν_{\ell}$ decays

Preprint · July 24, 2024 Link to item Cite

AI-assisted detector design for the EIC (AID(2)E)

Journal Article Journal of Instrumentation · July 1, 2024 Artificial Intelligence is poised to transform the design of complex, large-scale detectors like ePIC at the future Electron Ion Collider. Featuring a central detector with additional detecting systems in the far forward and far backward regions, the ePIC ... Full text Cite

Technical Report on the Belle II Summer Workshop and Explorer Workshop 2023

Report · June 17, 2024 Full text Cite

Measurement of the branching fractions of $\bar{B}\to D^{()} K^- K^{()0}_{(S)}$ and $\bar{B}\to D^{(*)}D_s^{-}$ decays at Belle II

Preprint · June 10, 2024 Link to item Cite

Photon classification with Gradient Boosted Trees at CLAS12

Journal Article Journal of Instrumentation · June 1, 2024 Dihadron semi-inclusive deep inelastic scattering (SIDIS) of 10.6 GeV longitudinally polarized electrons off the proton has been measured using the CLAS12 detector at Jefferson Lab. Two separate channels, π + π 0 and π - π ... Full text Cite

Normalizing flows for domain adaptation when identifying Λ hyperon events

Journal Article Journal of Instrumentation · June 1, 2024 This study focuses on the application of a normalizing flow as a method of domain adaptation when classifying physics data. Normalizing flows offer a way to transform data points between two different distributions. The present study investigates a novel m ... Full text Cite

Search for the decay $B^{0}\toγγ$ using Belle and Belle II data

Preprint · May 30, 2024 Link to item Cite

Search for lepton-flavor-violating $τ^- \to μ^-μ^+μ^-$ decays at Belle II

Preprint · May 12, 2024 Link to item Cite

Measurement of the $e^+e^- \to π^+π^-π^0$ cross section in the energy range 0.62-3.50 GeV at Belle II

Preprint · April 7, 2024 Link to item Cite

Perspectives of Semi-Inclusive Deep-Inelastic Scattering

Preprint · March 28, 2024 Link to item Cite

Corrigendum to “Measured and projected beam backgrounds in the Belle II experiment at the SuperKEKB collider” [Nucl. Instrum. Methods Phys. Res. A 1055 (2023) 168550] (Nuclear Inst. and Methods in Physics Research, A (2023) 1055, (S0168900223005405), (10.1016/j.nima.2023.168550))

Journal Article Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · March 1, 2024 The authors regret to report that they made a typographical error in quoted units for the measured by time projection chambers (TPCs) fast neutron fluence per a Snowmass year (107 s) in the original work [1]. In Table 5, the units of the fluence ... Full text Cite

Photon Classification with Gradient Boosted Trees at CLAS12

Preprint · February 20, 2024 Link to item Cite

A test of lepton flavor universality with a measurement of $R(D^{*})$ using hadronic $B$ tagging at the Belle II experiment

Preprint · January 5, 2024 Link to item Cite

Study of B+ →p n ¯ π0

Journal Article Physical Review D · December 1, 2023 We search for the tree-diagram dominated process B+→pn¯π0, using a data sample of 772×106BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. This is the first search with the Belle detector for a ... Full text Cite

Simulation studies related to the particle identification by the forward and backward RICH detectors at Electron Ion Collider

Journal Article Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · November 1, 2023 The Electron-Ion collider (EIC) will be the ultimate facility to study the dynamics played by colored quarks and gluons in the phenomenology of nucleons and nuclei, described by Quantum Chromodynamics. The physics programs will greatly rely on efficient pa ... Full text Cite

First Simultaneous Determination of Inclusive and Exclusive |V_{ub}|.

Journal Article Physical review letters · November 2023 The first simultaneous determination of the absolute value of the Cabibbo-Kobayashi-Maskawa matrix element V_{ub} using inclusive and exclusive decays is performed with the full Belle data set at the ϒ(4S) resonance, corresponding to an integrated luminosi ... Full text Cite

Measurement of Angular Coefficients of $\bar{B} \to D^* \ell \barν_\ell$: Implications for $|V_{cb}|$ and Tests of Lepton Flavor Universality

Preprint · October 31, 2023 Link to item Cite

Measured and projected beam backgrounds in the Belle II experiment at the SuperKEKB collider

Journal Article Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · October 1, 2023 The Belle II experiment at the SuperKEKB electron–positron collider aims to collect an unprecedented data set of 50ab−1 to study CP-violation in the B-meson system and to search for Physics beyond the Standard Model. SuperKEKB is already the wor ... Full text Cite

Search for a τ^{+}τ^{-} Resonance in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} Events with the Belle II Experiment.

Journal Article Physical review letters · September 2023 We report the first search for a nonstandard-model resonance decaying into τ pairs in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} events in the 3.6-10 GeV/c^{2} mass range. We use a 62.8 fb^{-1} sample of e^{+}e^{-} collisions collected at a center-of-mass energy of ... Full text Cite

Test of Light-Lepton Universality in the Rates of Inclusive Semileptonic B-Meson Decays at Belle II.

Journal Article Physical review letters · August 2023 We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(X_{e/μ})=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189 fb^{-1} from electron-positron col ... Full text Cite

Observation of a threshold cusp at the Λη threshold in the pK- mass spectrum with Λc+ →pK-π+ decays

Journal Article Physical Review D · August 1, 2023 We observe a narrow peaking structure in the pK- invariant-mass spectrum near the Λη threshold. The peak is clearly seen in 1.5 million events of Λc+→pK-π+ decay using the 980 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e ... Full text Cite

Artificial Intelligence for the Electron Ion Collider (AI4EIC)

Preprint · July 17, 2023 Link to item Cite

Precision studies of QCD in the low energy domain of the EIC

Journal Article Progress in Particle and Nuclear Physics · July 1, 2023 This White Paper aims at highlighting the important benefits in the science reach of the EIC. High luminosity operation is generally desirable, as it enables producing and harvesting scientific results in a shorter time period. It becomes crucial for progr ... Full text Cite

First measurement of the Q2 distribution of X (3915) single-tag two-photon production

Journal Article Physical Review D · July 1, 2023 We report the first measurement of the Q2 distribution of X(3915) produced by single-tag two-photon interactions. The decay mode used is X(3915)→J/ψω. The covered Q2 region is from 1.5 (GeV/c)2 to 10.0 (GeV/c)2. We observe 7.9±3.1(stat)±1.5(syst) events, w ... Full text Cite

Measurement of differential distributions of B →d∗ℓ ν ¯ ℓ and implications on

Journal Article Physical Review D · July 1, 2023 We present a measurement of the differential shapes of exclusive B→D∗ℓν¯ℓ (B=B-,B¯0 and ℓ=e, μ) decays with hadronic tag-side reconstruction for the full 711 fb-1 Belle dataset. We extract the Caprini-Lellouch-Neubert (CLN) and Boyd-Grinstein-Lebed (BGL) f ... Full text Cite

First Measurement of the Michel Parameter ξ^{'} in the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} Decay at Belle.

Journal Article Physical review letters · July 2023 We report the first measurement of the Michel parameter ξ^{'} in the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} decay with a new method proposed just recently. The measurement is based on the reconstruction of the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} events with subsequent mu ... Full text Cite

Study of the muon decay-in-flight in the τ- →μ- ν ¯ μντ decay to measure the Michel parameter ζ′

Journal Article Physical Review D · July 1, 2023 We present the first measurement of the Michel parameter ζ′ in the τ-→μ-ν¯μντ decay using the full data sample of 988 fb-1 collected by the Belle detector operating at the KEKB asymmetric energy e+e- collider. The method is based on the reconstruction of t ... Full text Cite

Search for a $τ^+τ^-$ resonance in $e^{+}e^{-}\rightarrow μ^{+}μ^{-} τ^+τ^-$ events with the Belle II experiment

Preprint · June 21, 2023 Link to item Cite

Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab

Preprint · June 13, 2023 Link to item Cite

Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei

Journal Article Physical Review C · June 1, 2023 We report the measurement of xB scaling in (e,e′p) cross-section ratios off nuclei relative to deuterium at large missing momentum of 350≤pmiss≤600 MeV/c. The observed scaling extends over a kinematic range of 0.7≤xB≤1.8, which is significantly wider than ... Full text Cite

Measurement of the branching fraction and CP asymmetry of B0 →π0π0 decays using 198×106 B B ¯ pairs in Belle II data

Journal Article Physical Review D · June 1, 2023 We report measurements of the branching fraction and CP asymmetry in B0→π0π0 decays reconstructed at Belle II in an electron-positron collision sample containing 198×106 BB¯ pairs. We measure a branching fraction B(B0→π0π0)=(1.38±0.27±0.22)×10-6 and a CP a ... Full text Cite

Study of the lineshape of X (3872) using B decays to D0 D ¯ ∗0K

Journal Article Physical Review D · June 1, 2023 We present a study of the X(3872) lineshape in the decay B→X(3872)K→D0D¯∗0K using a data sample of 772×106 BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The peak near the threshold in the D0 ... Full text Cite

Domain-adversarial graph neural networks for Λ hyperon identification with CLAS12

Journal Article Journal of Instrumentation · June 1, 2023 Machine learning methods and in particular Graph Neural Networks (GNNs) have revolutionized many tasks within the high energy physics community. Particularly in the realm of jet tagging, GNNs and domain adaptation have been especially successful. However, ... Full text Cite

Search for lepton-flavor-violating $τ^- \to \ell^-φ$ decays in 2019-2021 Belle II data

Preprint · May 8, 2023 Link to item Cite

Observation of ${B\to D^{(*)} K^- K^{0}_S}$ decays using the 2019-2022 Belle II data sample

Preprint · May 2, 2023 Link to item Cite

First observation of B → D ¯ 1 (→ D ¯ π+π-) ℓ+ν ℓ and measurement of the B → D ¯ (∗)π ℓ+ν ℓ and B → D ¯ (∗)π+π- ℓ+ν ℓ branching fractions with hadronic tagging at Belle

Journal Article Physical Review D · May 1, 2023 We report measurements of the ratios of branching fractions for B→D¯(∗)πℓ+νℓ and B→D¯(∗)π+π-ℓ+νℓ relative to B→D¯∗ℓ+νℓ decays with ℓ=e, μ. These results are obtained from a data sample that contains 772×106BB¯ pairs collected near the ϒ(4S) resonance with ... Full text Cite

First Measurement of the B^{+}→π^{+}π^{0}π^{0} Branching Fraction and CP Asymmetry.

Journal Article Physical review letters · May 2023 We study B^{+}→π^{+}π^{0}π^{0} using 711 fb^{-1} of data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We measure an inclusive branching fraction of (19.0±1.5±1.4)×10^{-6} and an inclusive CP a ... Full text Cite

Measurement of the B0 lifetime and flavor-oscillation frequency using hadronic decays reconstructed in 2019-2021 Belle II data

Journal Article Physical Review D · May 1, 2023 We measure the B0 lifetime and flavor-oscillation frequency using B0→D(∗)-π+ decays collected by the Belle II experiment in asymmetric-energy e+e- collisions produced by the SuperKEKB collider operating at the ϒ(4S) resonance. We fit the decay-time distrib ... Full text Cite

First Observation of Λπ^{+} and Λπ^{-} Signals near the K[over ¯]N(I=1) Mass Threshold in Λ_{c}^{+}→Λπ^{+}π^{+}π^{-} Decay.

Journal Article Physical review letters · April 2023 Using the data sample of 980 fb^{-1} collected with the Belle detector operating at the KEKB asymmetric-energy e^{+}e^{-} collider, we present the results of an investigation of the Λπ^{+} and Λπ^{-} invariant mass distributions looking for substructure i ... Full text Cite

Measurement of lepton mass squared moments in B →xcℓ ν ¯ ℓ decays with the Belle II experiment

Journal Article Physical Review D · April 1, 2023 We present measurements of the first to fourth moments of the lepton mass squared q2 of B→Xcℓν¯ℓ decays for ℓ=e, μ and with Xc a hadronic system containing a charm quark. These results use a sample of electron-positron collisions at the ϒ(4S) resonance cor ... Full text Cite

Study of e+e- → ς0 ς ¯ 0 and ς+ ς ¯ - by initial state radiation method at Belle

Journal Article Physical Review D · April 1, 2023 The processes e+e-→ς0ς¯0 and e+e-→ς+ς¯- are studied using initial-state-radiation events in a sample of 980 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The cross sections from the mass threshold to 3 GeV/c2 and the e ... Full text Cite

First Simultaneous Determination of Inclusive and Exclusive $\left|V_{ub}\right|$

Preprint · March 30, 2023 Link to item Cite

First measurement of the Michel parameter $ξ^\prime$ in the $τ^-\toμ^-\barν_μν_τ$ decay at Belle

Preprint · March 19, 2023 Link to item Cite

Study of the muon decay-in-flight in the $τ^-\toμ^-\barν_μν_τ$ decay to measure the Michel parameter $ξ^\prime$

Preprint · March 19, 2023 Link to item Cite

Measurement of the branching fraction and $\it CP$ asymmetry of $B^{0} \rightarrow π^{0} π^{0}$ decays using $198 \times 10^6$ $B\overline{B}$ pairs in Belle II data

Preprint · March 15, 2023 Link to item Cite

The Present and Future of QCD

Preprint · March 4, 2023 Link to item Cite

Search for CP violation and measurement of branching fractions and decay asymmetry parameters for Λ_c⁺→Λh⁺ and Λ_c⁺→Σ⁰h⁺ (h=K,π).

Journal Article Science bulletin · March 2023 We report a study of Λc+→Λh+ and Λc+→Σ0h+ (h=K,π) decays based on a data sample of 980fb-1 collected with the Belle detector at the KEKB energy-asymmetric e+ ... Full text Cite

Search for the decay Bs0 →π0π0 at Belle

Journal Article Physical Review D · March 1, 2023 We report the results of the first search for the decay Bs0→π0π0 using 121.4 fb-1 of data collected at the ϒ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe no signal and set a 90% confidence level upper limit ... Full text Cite

Two-particle angular correlations in e + e − collisions to hadronic final states in two reference coordinates at Belle

Journal Article Journal of High Energy Physics · March 1, 2023 We present the analysis of two-particle angular correlations using coordinate systems defined with the conventional beam axis and the event thrust axis. We propose the latter as a good representation for the correlation structure interpretation in the e Full text Cite

Measurement of the $B^0$ lifetime and flavor-oscillation frequency using hadronic decays reconstructed in 2019-2021 Belle II data

Preprint · February 24, 2023 Link to item Cite

Measurement of decay-time-dependent $\textit{CP}$ violation in $B^0 \to J/ψK^0_S$ decays using 2019-2021 Belle II data

Preprint · February 24, 2023 Link to item Cite

Domain-Adversarial Graph Neural Networks for $Λ$ Hyperon Identification with CLAS12

Preprint · February 10, 2023 Link to item Cite

Study of the lineshape of $X(3872)$ using $B$ decays to $D^0\overline{D}{}^{*0}K$

Preprint · February 4, 2023 Link to item Cite

Measured and projected beam backgrounds in the Belle II experiment at the SuperKEKB collider

Preprint · February 3, 2023 Link to item Cite

Measurement of the branching fractions for Cabibbo-suppressed decays D+ →K+K-π+π0 and D (s)+ →K+π-π+π0 at Belle

Journal Article Physical Review D · February 1, 2023 We present measurements of the branching fractions for the singly Cabibbo-suppressed decays D+→K+K-π+π0 and Ds+→K+π-π+π0, and the doubly Cabibbo-suppressed decay D+→K+π-π+π0, based on 980 fb-1 of data recorded by the Belle experiment at the KEKB e+e- colli ... Full text Cite

Measurement of the B+/B0 production ratio in e+e- collisions at the ϒ (4S) resonance using B →J/ψ (ℓℓ)K decays at Belle

Journal Article Physical Review D · February 1, 2023 We measure the ratio of branching fractions for the ϒ(4S) decays to B+B- and B0B¯0 using B+→J/ψ(ℓℓ)K+ and B0→J/ψ(ℓℓ)K0 samples, where J/ψ(ℓℓ) stands for J/ψ→ℓ+ℓ- (ℓ=e or μ), with 711 fb-1 of data collected at the ϒ(4S) resonance with the Belle detector. We ... Full text Cite

Measurement of branching fractions of Λc+ →p KS0 KS0 and Λc+ →p KS0 η at Belle

Journal Article Physical Review D · February 1, 2023 We present a study of a singly Cabibbo-suppressed decay Λc+→pKS0KS0 and a Cabibbo-favored decay Λc+→pKS0η based on 980 fb-1 of data collected by the Belle detector, operating at the KEKB energy-asymmetric e+e- collider. We measure their branching fractions ... Full text Cite

Measurement of the branching fraction of Ξc0 → Λc+ π- At Belle

Journal Article Physical Review D · February 1, 2023 Based on a data sample of 983 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider, we present the study of the heavy-flavor-conserving decay Ξc0→Λc+π- with Λc+ reconstructed via its pK-π+ decay mode. The branching fraction ra ... Full text Cite

Low- pT direct-photon production in Au+Au collisions at sNN =39 and 62.4 GeV

Journal Article Physical Review C · February 1, 2023 The measurement of direct photons from Au+Au collisions at sNN=39 and 62.4 GeV in the transverse-momentum range 0.4 Full text Cite

Search for the decay $B^0_s \rightarrow π^0 π^0$ at Belle

Preprint · January 20, 2023 Link to item Cite

A test of light-lepton universality in the rates of inclusive semileptonic $B$-meson decays at Belle II

Preprint · January 19, 2023 Link to item Cite

Measurement of Differential Distributions of $B \to D^* \ell \bar ν_\ell$ and Implications on $|V_{cb}|$

Preprint · January 18, 2023 Link to item Cite

Simulation studies related to the particle identification by the forward and backward RICH detectors at Electron Ion Collider

Preprint · January 17, 2023 Link to item Cite

First measurement of the Q^2 distribution of X(3915) single-tag two-photon production

Preprint · January 16, 2023 Link to item Cite

Measurement of the $B^{0} \rightarrow D^{*-} \ell^{+} ν_{\ell}$ branching ratio and $|V_{cb}|$ with a fully reconstructed accompanying $B$ meson in 2019-2021 Belle II data

Preprint · January 11, 2023 Link to item Cite

Observation of Correlations between Spin and Transverse Momenta in Back-to-Back Dihadron Production at CLAS12.

Journal Article Physical review letters · January 2023 We report the first measurements of deep inelastic scattering spin-dependent azimuthal asymmetries in back-to-back dihadron electroproduction in the deep inelastic scattering process. In this reaction, two hadrons are produced in opposite hemispheres along ... Full text Cite

Study of e+e- →ηφ via initial state radiation at Belle

Journal Article Physical Review D · January 1, 2023 Using 980 fb-1 of data collected on and around the (nS) (n=1, 2, 3, 4, 5) resonances with the Belle detector at the KEKB collider, we measure the cross section of e+e-→ηφ from threshold to 3.95 GeV via initial state radiation. There are clear φ(1680) and J ... Full text Cite

ATHENA at the Electron-Ion Collider

Journal Article Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment · January 2023 Full text Cite

Input of the Belle II Collaboration to the NuPECC Long Range Plan 2024

Preprint · December 18, 2022 Link to item Cite

Reconstruction of $B \to ρ\ell ν_\ell$ decays identified using hadronic decays of the recoil $B$ meson in 2019 -- 2021 Belle II data

Preprint · November 28, 2022 Link to item Cite

Precision Studies of QCD in the Low Energy Domain of the EIC

Preprint · November 28, 2022 Link to item Cite

Study of $B^+ \rightarrow p \overline{n} π^0$

Preprint · November 21, 2022 Link to item Cite

First Observation of $Λπ^+$ and $Λπ^-$ Signals near the $\bar{K}N (I=1)$ Mass Threshold in $Λ_c^+\rightarrowΛπ^+π^+π^-$ Decay

Preprint · November 20, 2022 Link to item Cite

First observation of $B\!\to \bar{D}_1(\to\bar{D}π^+π^-)\ell^+ν_\ell$ and measurement of the $B\!\to \bar{D}^{()}π\ell^+ν_\ell$ and $B\!\to \bar{D}^{()}π^+π^-\ell^+ν_\ell$ branching fractions with hadronic tagging at Belle

Preprint · November 17, 2022 Link to item Cite

Study of $e^+e^- \rightarrow Σ^0 \overlineΣ{}^0$ and $Σ^+\overlineΣ{}^- $ by Initial State Radiation Method at Belle

Preprint · October 30, 2022 Link to item Cite

Determination of $|V_{cb}|$ from $B\to D\ellν$ decays using 2019-2021 Belle II data

Preprint · October 24, 2022 Link to item Cite

Measurement of the photon-energy spectrum in inclusive $B\rightarrow X_{s}γ$ decays identified using hadronic decays of the recoil $B$ meson in 2019-2021 Belle II data

Preprint · October 18, 2022 Link to item Cite

ATHENA Detector Proposal -- A Totally Hermetic Electron Nucleus Apparatus proposed for IP6 at the Electron-Ion Collider

Preprint · October 13, 2022 Link to item Cite

Determination of $|V_{ub}|$ from untagged $B^0\toπ^- \ell^+ ν_{\ell}$ decays using 2019-2021 Belle II data

Preprint · October 9, 2022 Link to item Cite

Measurement of branching fractions of $Λ_c^+\to{}pK_S^0K_S^0$ and $Λ_c^+\to{}pK_S^0η$ at Belle

Preprint · October 4, 2022 Link to item Cite

Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report

Journal Article Nuclear Physics A · October 1, 2022 This report describes the physics case, the resulting detector requirements, and the evolving detector concepts for the experimental program at the Electron-Ion Collider (EIC). The EIC will be a powerful new high-luminosity facility in the United States wi ... Full text Cite

ATHENA detector proposal - a totally hermetic electron nucleus apparatus proposed for IP6 at the Electron-Ion Collider

Journal Article Journal of Instrumentation · October 1, 2022 ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine tracking and momentum resolution, high performance electromagnetic and hadronic cal ... Full text Cite

Precision QCD, Hadronic Structure & Forward QCD, Heavy Ions: Report of Energy Frontier Topical Groups 5, 6, 7 submitted to Snowmass 2021

Preprint · September 29, 2022 Link to item Cite

Reconstruction of event kinematics in semi-inclusive deep-inelastic scattering using the hadronic final state and Machine Learning

Preprint · September 28, 2022 Link to item Cite

Measurement of decay-time dependent $CP$ violation in $B^0 \rightarrow K^0_S K^0_S K^0_S$ using 2019--2021 Belle II data

Preprint · September 20, 2022 Link to item Cite

Measurement of the branching fractions and $CP$ asymmetries of $B^+ \rightarrow π^+ π^0$ and $B^+ \rightarrow K^+ π^0$ decays in 2019-2021 Belle II data

Preprint · September 12, 2022 Link to item Cite

CORE -- a COmpact detectoR for the EIC

Preprint · September 1, 2022 Link to item Cite

Observation of a Threshold Cusp at the $Λη$ Threshold in the $pK^{-}$ Mass Spectrum with $Λ_{c}^{+} \rightarrow p K^{-} π^{+}$ Decays

Preprint · August 31, 2022 Link to item Cite

Search for $C\!P$ violation and measurement of branching fractions and decay asymmetry parameters for $Λ_c^+\toΛh^+$ and $Λ_c^+\toΣ^{0} h^+$ ($h\!=\!K,\,π$)

Preprint · August 18, 2022 Link to item Cite

First observation of correlations between spin and transverse momenta in back-to-back dihadron production at CLAS12

Preprint · August 9, 2022 Link to item Cite

Measurement of Branching Fraction and Longitudinal Polarization in $B^0 \to ρ^+ ρ^-$ Decays at Belle II

Preprint · August 6, 2022 Link to item Cite

First measurement of the $B^{+}\toπ^{+}π^{0}π^{0}$ branching fraction and \textit{CP} asymmetry

Preprint · August 3, 2022 Link to item Cite

Measurement of the branching fractions of the B+ →ηâ "+νâ " and B+ →η′â "+νâ " decays with signal-side only reconstruction in the full q2 range

Journal Article Physical Review D · August 1, 2022 The branching fractions of the decays B+→ηâ "+νâ "and B+→η′â "+νâ "are measured, where â "is either an electron or a muon, using a data sample of 711 fb-1 containing 772×106BB¯ pairs collected at the I (4S) resonance with the Belle detector at the KEKB asy ... Full text Cite

Measurements of the branching fraction, isospin asymmetry, and lepton-universality ratio in $B \to J/ψK$ decays at Belle II

Preprint · July 22, 2022 Link to item Cite

Snowmass White Paper: Belle II physics reach and plans for the next decade and beyond

Preprint · July 13, 2022 Link to item Cite

Measurement of the $B^+/B^0$ production ratio in $e^+e^-$ collisions at the $Υ(4S)$ resonance using $B \rightarrow J/ψ(\ell\ell) K$ decays at Belle

Preprint · July 4, 2022 Link to item Cite

Search for Z′ →μ+μ- in the Lμ-Lτ gauge-symmetric model at Belle

Journal Article Physical Review D · July 1, 2022 We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutrinos in the process e+e-→Z′(→μ+μ-)μ+μ-, using a 643 fb-1 data sample collected by the Belle experiment at or near the ϒ(1S,2S,3S,4S,5S) resonances at the KEK ... Full text Cite

Search for the radiative penguin decays B0 → KS0 KS0 γ in the Belle experiment

Journal Article Physical Review D · July 1, 2022 We report results from the first search for the rare penguin-dominated decay mode B0→KS0KS0γ, which can result from the production of tensor mesons f(1270) and f′(1525) in association with a photon. The search uses the full data sample of 772×106 BB¯ pairs ... Full text Cite

Angular analysis of $B^+ \to ρ^+ρ^0$ decays reconstructed in 2019, 2020, and 2021 Belle II data

Preprint · June 24, 2022 Link to item Cite

Two-particle angular correlations in $e^+ e^-$ collisions to hadronic final states in two reference coordinates at Belle

Preprint · June 19, 2022 Link to item Cite

Study of Exclusive $B \to πe^+ ν_e$ Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb$^{-1}$ of Belle II Data

Preprint · June 16, 2022 Link to item Cite

Measurement of the branching fraction of the $B^0 \to K_S^0 π^0 γ$ decay using 190 fb$^{-1}$ of Belle II data

Preprint · June 16, 2022 Link to item Cite

Measurement of the branching fraction of $Ξ_{c}^{0}\to Λ_{c}^{+}π^{-}$ at Belle

Preprint · June 16, 2022 Link to item Cite

First decay-time-dependent analysis of $B^{0} \to K_{S}^{0} π^{0}$ at Belle II

Preprint · June 15, 2022 Link to item Cite

Measurement of the branching fraction for the decay $B \to K^{\ast}(892)\ell^+\ell^-$ at Belle II

Preprint · June 13, 2022 Link to item Cite

Study of γγ →γψ (2S) at Belle

Journal Article Physical Review D · June 1, 2022 Using 980 fb-1 of data at and around the I (nS) (n=1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetric-energy e+e-collider, the two-photon process γγ→γψ(2S) is studied from the threshold to 4.2 GeV for the first time. Two str ... Full text Cite

Snowmass 2021 White Paper on Upgrading SuperKEKB with a Polarized Electron Beam: Discovery Potential and Proposed Implementation

Preprint · May 25, 2022 Link to item Cite

Measurement of the branching fractions for Cabibbo-suppressed decays $D^{+}\to K^{+} K^{-}π^{+}π^{0}$ and $D_{(s)}^{+}\to K^{+}π^{-}π^{+}π^{0}$ at Belle

Preprint · May 4, 2022 Link to item Cite

Search for charged lepton flavor violating decays of ϒ (1S)

Journal Article Journal of High Energy Physics · May 1, 2022 We present a search for the charged lepton-flavor-violating decays ϒ(1S) →ℓ±ℓ′∓ and radiative charged lepton-flavour-violating decays ϒ(1S) → γℓ±ℓ′∓ [ℓ,ℓ′ = e, μ, τ] using the 158 million ϒ(2S) sample collected b ... Full text Cite

Transverse Lambda production at the future Electron-Ion Collider

Journal Article Physical Review D · May 1, 2022 We provide a comprehensive overview of transversely polarized Λ production at the future Electron-Ion Collider (EIC). In particular, we study both spontaneous transverse Λ polarization as well as the transverse spin transfer within the transverse momentum ... Full text Cite

Beam-spin asymmetry Σ for Σ− hyperon photoproduction off the neutron

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · April 10, 2022 We report a new measurement of the beam-spin asymmetry, Σ, for the γ→n→K+Σ− reaction using quasi-free neutrons in a liquid-deuterium target. The new dataset includes data at previously unmeasured photon energy and angular ranges, ther ... Full text Cite

Opportunities for precision QCD physics in hadronization at Belle II -- a snowmass whitepaper

Preprint · April 5, 2022 Link to item Cite

Measurement of Two-Particle Correlations of Hadrons in e^{+}e^{-} Collisions at Belle.

Journal Article Physical review letters · April 2022 The measurement of two-particle angular correlation functions in high-multiplicity e^{+}e^{-} collisions at sqrt[s]=10.52 GeV is reported. In this study, the 89.5 fb^{-1} of hadronic e^{+}e^{-} annihilation data collected by the Belle detector at KEKB ar ... Full text Cite

Measurement of the branching fraction and CP asymmetry for B → D ¯ 0π decays

Journal Article Physical Review D · April 1, 2022 We measure the branching fractions and CP asymmetries for the decays B0→D¯0π0 and B+→D¯0π+, using a data sample of 772×106 BB¯ pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e- collider. The branching fractions obtained and dir ... Full text Cite

Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV

Preprint · March 23, 2022 Link to item Cite

Belle II Executive Summary

Preprint · March 18, 2022 Link to item Cite

Search for $B^{0} \to K_S^{0}K_S^{0}γ$ decays at Belle

Preprint · March 10, 2022 Link to item Cite

Multidimensional, High Precision Measurements of Beam Single Spin Asymmetries in Semi-inclusive π^{+} Electroproduction off Protons in the Valence Region.

Journal Article Physical review letters · February 2022 High precision measurements of the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering (SIDIS) from the proton have been performed using a 10.6 GeV incident electron beam and the CLAS12 spectrometer at Jefferson Lab. We repor ... Full text Cite

Search for charged lepton flavor violating decays of $Υ(1S)$

Preprint · January 24, 2022 Link to item Cite

Measurement of Two-Particle Correlations of Hadrons in $e^{+}e^{-}$ Collisions at Belle

Preprint · January 5, 2022 Link to item Cite

Measurement of charged-pion production in deep-inelastic scattering off nuclei with the CLAS detector

Journal Article Physical Review C · January 1, 2022 Background: Energetic quarks in nuclear deep-inelastic scattering propagate through the nuclear medium. Processes that are believed to occur inside nuclei include quark energy loss through medium-stimulated gluon bremsstrahlung and intranuclear interaction ... Full text Cite

Search for the decay Bs0 →ηη

Journal Article Physical Review D · January 1, 2022 We report results from a search for the decay Bs0→ηη using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We do not observe any signal and set an upper limit on the branching fraction ... Full text Cite

First Measurement of Timelike Compton Scattering.

Journal Article Physical review letters · December 2021 We present the first measurement of the timelike Compton scattering process, γp→p^{'}γ^{*}(γ^{*}→e^{+}e^{-}), obtained with the CLAS12 detector at Jefferson Lab. The photon beam polarization and the decay lepton angular asymmetries are reported in the rang ... Full text Cite

Improved Λp Elastic Scattering Cross Sections between 0.9 and 2.0 GeV/c as a Main Ingredient of the Neutron Star Equation of State.

Journal Article Physical review letters · December 2021 Strange matter is believed to exist in the cores of neutron stars based on simple kinematics. If this is true, then hyperon-nucleon interactions will play a significant part in the neutron star equation of state. Yet, compared to other elastic scattering p ... Full text Cite

Search for the decay $B_s^0\rightarrowηη$

Journal Article Phys. Rev. D · November 29, 2021 We report results from a search for the decay $B_s^0\rightarrow\eta\eta$ using 121.4 fb$^{-1}$ of data collected at the $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We do not observe any signal and set a ... Link to item Cite

Measurement of the branching fraction and $CP$ asymmetry for $B\to\bar{D}^{0} π$ decays

Journal Article Phys. Rev. D · November 24, 2021 We measure the branching fractions and $CP$ asymmetries for the decays $B^{0}\to \bar{D}^{0}\pi^{0}$ and $B^{+}\to \bar{D}^{0}\pi^{+}$, using a data sample of $772\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle dete ... Link to item Cite

Precise Measurement of the D^{0} and D^{+} Lifetimes at Belle II.

Journal Article Physical review letters · November 2021 We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The dat ... Full text Cite

Exclusive $B \to X_u \ell ν_\ell$ Decays with Hadronic Full-event-interpretation Tagging in 62.8 fb$^{-1}$ of Belle II Data

Journal Article · November 1, 2021 We present a reconstruction in early data of the semileptonic decay $B^+ \to \pi^0 \ell^+ \nu_\ell$, and first results of a reconstruction of the decays $B^+ \to \rho^0 \ell^+ \nu_\ell$ and $B^0 \to \rho^- \ell^+ \nu_\ell$ in a sample corresponding to 62.8 ... Link to item Cite

Measurements of the branching fractions for $B \to K^{*}γ$ decays at Belle II

Journal Article · October 15, 2021 This paper reports a study of $B \to K^{*}\gamma$ decays using $62.8\pm 0.6$ fb$^{-1}$ of data collected during 2019--2020 by the Belle II experiment at the SuperKEKB $e^{+}e^{-}$ asymmetric-energy collider, corresponding to $(68.2 \pm 0.8) \times 10^6$ $B ... Link to item Cite

Search for lepton-flavor-violating tau-lepton decays to ℓγ at Belle

Journal Article Journal of High Energy Physics · October 1, 2021 Charged lepton flavor violation is forbidden in the Standard Model but possible in several new physics scenarios. In many of these models, the radiative decays τ± → ℓ±γ (ℓ = e, μ) are predicted to have a sizeable probability, making t ... Full text Cite

Angular analysis of $B^+ \to ρ^+ρ^0$ decays reconstructed in 2019-2020 Belle II data

Journal Article · September 23, 2021 We report on the first Belle II measurement of the branching fraction ($\mathcal{B}$) and longitudinal polarization fraction ($f_L$) of $B^+\to \rho^+\rho^0$ decays. We reconstruct $B^+\to \rho^+(\to \pi^+\pi^0(\to \gamma\gamma))\rho^0(\to \pi^+\pi^-)$ dec ... Link to item Cite

Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless $B$ decays reconstructed in 2019-2020 Belle II data

Journal Article · September 22, 2021 We report on measurements of branching fractions ($\mathcal{B}$) and CP-violating charge asymmetries ($\mathcal{A}_{\rm CP}$) of multibody charmless $B$ decays reconstructed by the Belle II experiment at the SuperKEKB electron-positron collider. We use a s ... Link to item Cite

Measurement of charged-pion production in deep-inelastic scattering off nuclei with the CLAS detector

Journal Article Phys. Rev. C · September 21, 2021 Background: Energetic quarks in nuclear DIS propagate through the nuclear medium. Processes that are believed to occur inside nuclei include quark energy loss through medium-stimulated gluon bremsstrahlung and intra-nuclear interactions of forming hadrons. ... Link to item Cite

Search for $Z^{'} \rightarrow μ^{+} μ^{-}$ in the $L_μ{-} L_τ$ gauge-symmetric model at Belle

Journal Article · September 17, 2021 We search for a new gauge boson $Z'$ that couples only to heavy leptons and their corresponding neutrinos in the process $e^{+} e^{-} \rightarrow Z'(\rightarrow \mu^{+}\mu^{-}) \mu^{+}\mu^{-}$, using a 643 fb$^{-1}$ data sample collected by the Belle exper ... Link to item Cite

Measurements of the Branching Fractions of the Semileptonic Decays Ξ_{c}^{0}→Ξ^{-}ℓ^{+}ν_{ℓ} and the Asymmetry Parameter of Ξ_{c}^{0}→Ξ^{-}π^{+}.

Journal Article Physical review letters · September 2021 Using data samples of 89.5 and 711 fb^{-1} recorded at energies of sqrt[s]=10.52 and 10.58 GeV, respectively, with the Belle detector at the KEKB e^{+}e^{-} collider, we report measurements of branching fractions of semileptonic decays Ξ_{c}^{0}→Ξ^{-}ℓ^{+ ... Full text Cite

First-time measurement of Timelike Compton Scattering

Journal Article · August 26, 2021 We present the first measurement of the Timelike Compton Scattering process, $\gamma p\to p^\prime \gamma^* (\gamma^*\to e^+e^-) $, obtained with the CLAS12 detector at Jefferson Lab. The photon beam polarization and the decay lepton angular asymmetries ar ... Link to item Cite

Transverse Lambda production at the future Electron-Ion Collider

Journal Article Phys. Rev. D · August 11, 2021 We provide a comprehensive overview of transversely polarized $\Lambda$ production at the future Electron-Ion Collider (EIC). In particular, we study both spontaneous transverse $\Lambda$ polarization as well as the transverse spin transfer within the Tran ... Link to item Cite

Study of $χ_{bJ}(nP) \rightarrow ωΥ(1S)$ at Belle

Journal Article · August 7, 2021 We report results from a study of hadronic transitions of the $\chi_{bJ}(nP)$ states of bottomonium at Belle. The $P$-wave states are reconstructed in transitions to the $\Upsilon(1S)$ with the emission of an $\omega$ meson. The transitions of the $n=2$ tr ... Link to item Cite

Improved $Λp$ Elastic Scattering Cross Sections Between 0.9 and 2.0 GeV/c and Connections to the Neutron Star Equation of State

Journal Article · August 6, 2021 Strange matter is believed to exist in the cores of neutron stars based on simple kinematics. If this is true, then hyperon-nucleon interactions will play a significant part in the neutron star equation of state (EOS). Yet, compared to other elastic scatte ... Link to item Cite

Measurement of deeply virtual Compton scattering off He 4 with the CEBAF Large Acceptance Spectrometer at Jefferson Lab

Journal Article Physical Review C · August 1, 2021 We report on the measurement of the beam spin asymmetry in the deeply virtual Compton scattering off He4 using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab using a 6 GeV longitudinally polarized electron beam incident on a pressurized He ... Full text Cite

Search for the decay Bs0 →η′η

Journal Article Physical Review D · August 1, 2021 We report the results of the first search for the decay Bs0→η′η using 121.4 fb-1 of data collected at the I (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e-collider. We observe no significant signal and set a 90% confidence-level u ... Full text Cite

Measurement of the branching fraction for $B^{0} \rightarrow π^{0} π^{0}$ decays reconstructed in 2019-2020 Belle II data

Journal Article · July 5, 2021 We report the first reconstruction of the $B^{0} \to \pi^{0} \pi^{0}$ decay mode at Belle II using samples of 2019 and 2020 data that correspond to 62.8 fb$^{-1}$ of integrated luminosity. We find $14.0^{+6.8}_{-5.6}$ signal decays, corresponding to a sign ... Link to item Cite

Measurements of partial branching fractions of inclusive B →xuℓ+νℓ decays with hadronic tagging

Journal Article Physical Review D · July 1, 2021 We present measurements of partial branching fractions of inclusive semileptonic B→Xuℓ+νℓ decays using the full Belle dataset of 711 fb-1 of integrated luminosity at the ϒ(4S) resonance and for ℓ=e, μ. Inclusive semileptonic B→Xuℓ+νℓ decays are Cabibbo-Kob ... Full text Cite

Rediscovery of $B^0\to J\mskip 1mu / ψ\mskip 2mu K^0_{\scriptscriptstyle L}$ at Belle II

Journal Article · June 25, 2021 We present preliminary results on the reconstruction of the $B^0\to J\mskip 1mu / \psi\mskip 2mu K^0_{\scriptscriptstyle L}$ decay, where $J\mskip 1mu / \psi\mskip 2mu\to\mu^+\mu^-$ or $e^+e^-$. Using a dataset corresponding to a luminosity of $62.8\pm0.6\ ... Link to item Cite

Measurements of branching fractions and direct CP asymmetries in $B^{0}\to K^{+} π^{-}$, $B^+ \to K_{\rm S}^0π^+$ and $B^0 \to π^+π^-$ using 2019 and 2020 data

Journal Article · June 7, 2021 We report updated measurements of branching fractions ($\mathcal{B}$) and CP-violating charge asymmetries ($\mathcal{A_{\rm CP}}$) for charmless $B$ decays at Belle II, which operates on or near the $\Upsilon$(4S) resonance at the SuperKEKB asymmetric ener ... Link to item Cite

First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+

Journal Article Physical Review D · June 1, 2021 We report results from a study of the spin and parity of Ξc(2970)+ using a 980 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. The decay angle distributions in the chain Ξc(2970)+→Ξc(2645)0π+→Ξc+π-π+ are analyz ... Full text Cite

Measurement of branching fractions and CP asymmetries for Ds+ →k+ (η,π0) and Ds+ →π+ (η,π0) decays at Belle

Journal Article Physical Review D · June 1, 2021 We report measurements of the branching fractions and CP asymmetries for Ds+→K+η, Ds+→K+π0, and Ds+→π+η decays, and the branching fraction for Ds+→π+π0. Our results are based on a data sample corresponding to an integrated luminosity of 921 fb-1 collected ... Full text Cite

Measurement of the time-integrated mixing probability $χ_d$ with a semileptonic double-tagging strategy and $34.6 {\rm fb}^{-1}$ of Belle II collision data

Journal Article · June 1, 2021 We present the first measurement of the time-integrated mixing probability $\chi_d$ using Belle II data collected at a center-of-mass (CM) energy of 10.58 GeV, corresponding to the mass of the $\Upsilon$(4S) resonance, with an integrated luminosity of $34. ... Link to item Cite

The study of $γγ\toγψ(2S)$ at Belle

Journal Article · May 13, 2021 Using $980~\rm fb^{-1}$ of data on and around the $\Upsilon(nS)(n=1,2,3,4,5)$ resonances collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, the two-photon process $\gamma\gamma\to \gamma\psi(2S)$ is studied from the threshol ... Link to item Cite

Measurements of branching fractions and direct ${\it CP}$-violating asymmetries in $B^+ \to K^+ π^0~\mbox{and}~π^+ π^0$ decays using 2019 and 2020 Belle II data

Journal Article · May 10, 2021 We report measurements of branching fractions ($\mathcal B$) and direct ${\it CP}$-violating asymmetries ($\mathcal A_{\it CP}$) for the decays $B^+\to K^+\pi^0$ and $B^+ \to \pi^+\pi^0$ reconstructed with the Belle II detector in a sample of asymmetric-en ... Link to item Cite

First search for direct $CP$-violating asymmetry in $B^0 \to K^0 π^0$ decays at Belle II

Journal Article · April 30, 2021 We report on the first measurement of the direct $CP$-violating asymmetry ($\mathcal{A}$) in the charmless decay $B^0 \to K^0\pi^0$ at Belle II and an updated measurement of its branching fraction ($\mathcal{B}$). We use a sample of electron-positron colli ... Link to item Cite

Measurement of the branching fractions of the $B^+ \to η\ell^+ ν_{\ell} $ and $B^+ \to η^{\prime} \ell^+ ν_{\ell} $ decays with signal-side only reconstruction in the full $q^2$ range

Journal Article Phys. Rev. D · April 27, 2021 The branching fractions of the decays $B^{+} \to \eta \ell^{+} \nu_{\ell}$ and $B^{+} \to \eta^{\prime} \ell^{+} \nu_{\ell}$ are measured, where $\ell$ is either an electron or a muon, using a data sample of $711\,{\rm fb}^{-1}$ containing $772 \times 10^6 ... Link to item Cite

Test of Lepton-Flavor Universality in Decays at Belle

Journal Article Physical Review Letters · April 22, 2021 Full text Cite

Measurements of the branching fractions of Λc+ →pη and Λc+ →pπ0 decays at Belle

Journal Article Physical Review D · April 14, 2021 We report measurements of the branching fractions of singly Cabibbo-suppressed decays Λc+→pη and Λc+→pπ0 using the full Belle data sample corresponding to an integrated luminosity of 980.6 fb-1. The data were collected by the Belle detector at the KEKB e+e ... Full text Cite

Erratum: Measurements of the branching fractions ofΛc+→pηandΛc+→pπ0decays at Belle (Physical Review D (2019) 100 (052007) DOI: 10.1103/PhysRevD.100.052007)

Journal Article Physical Review D · April 14, 2021 There was an error in the calculation of the value of NB0 in the original transcript. The value of f00 was erroneously set to 0.500 in the code (the value used in Monte Carlo studies), not the world average value of 0.486 as specified in the transcript. Th ... Full text Cite

Measurement of the branching fractions of $B\toη' K$ decays using 2019/2020 Belle II data

Journal Article · April 13, 2021 This note describes the rediscovery of $B\to\eta' K$ decays in Belle II data, both in the charged and neutral final state: $B_0\to\eta' K_S$ and $B^\pm\to\eta' K^\pm$. The $\eta'$ is searched for in two decay modes: $\eta'\to\eta\pi^+\pi^-$ with $\eta\to\g ... Link to item Cite

Study of $B\to D^{(*)}h$ decays using $62.8~\mathrm{fb}^{-1}$ of Belle II data

Journal Article · April 8, 2021 We report measurements related to hadronic $B$ decays to final states that contain charm mesons. The analyses are performed on a $62.8~\mathrm{fb}^{-1}$ data set collected by the Belle II experiment at a center-of-mass energy corresponding to the mass of t ... Link to item Cite

Observation of Beam Spin Asymmetries in the Process ep→e^{'}π^{+}π^{-}X with CLAS12.

Journal Article Physical review letters · April 2021 Featured Publication The observation of beam spin asymmetries in two-pion production in semi-inclusive deep inelastic scattering off an unpolarized proton target is reported. The data presented here were taken in the fall of 2018 with the CLAS12 spectrometer using a 10.6 GeV l ... Full text Cite

Measurement of branching fractions of Λc+ →η Λπ+, η ς0π+, Λ (1670)π+, and η ς (1385)+

Journal Article Physical Review D · March 15, 2021 We report branching fraction measurements of four decay modes of the Λc+ baryon, each of which includes an η meson and a Λ baryon in the final state, and all of which are measured relative to the Λc+→pK-π+ decay mode. The results are based on a 980 fb-1 da ... Full text Cite

Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report

Journal Article Nucl. Phys. A · March 8, 2021 Featured Publication This report describes the physics case, the resulting detector requirements, and the evolving detector concepts for the experimental program at the Electron-Ion Collider (EIC). The EIC will be a powerful new high-luminosity facility in the United States wi ... Link to item Cite

Test of lepton flavor universality and search for lepton flavor violation in B → Kℓℓ decays

Journal Article Journal of High Energy Physics · March 2021 AbstractWe present measurements of the branching fractions for the decays B → Kμ+μ Full text Cite

Beam Spin Asymmetry in Semi-Inclusive Electroproduction of Hadron Pairs.

Journal Article Physical review letters · February 2021 A first measurement of the longitudinal beam spin asymmetry A_{LU} in the semi-inclusive electroproduction of pairs of charged pions is reported. A_{LU} is a higher-twist observable and offers the cleanest access to the nucleon twist-3 parton distribution ... Full text Cite

Multidimensional, high precision measurements of beam single spin asymmetries in semi-inclusive $π^{+}$ electroproduction off protons in the valence region

Journal Article · January 10, 2021 High precision measurements of the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering (SIDIS) from the proton have been performed using a 10.6~GeV incident electron beam and the CLAS12 spectrometer at Jefferson Lab. We repor ... Link to item Cite

PHENIX Collaboration

Journal Article Nuclear Physics A · January 1, 2021 Full text Cite

Measurement of jet-medium interactions via direct photon-hadron correlations in Au+Au and d+Au collisions at sNN =200 GeV

Journal Article Physical Review C · November 19, 2020 We present direct photon-hadron correlations in 200 GeV/A Au+Au, d+Au, and p+p collisions, for direct photon pT from 5-12 GeV/c, collected by the PHENIX Collaboration in the years from 2006 to 2011. We observe no significant modification of jet fragmentati ... Full text Cite

Measurement of the charm-mixing parameter yCP in D0 → KS0 ω decays at Belle

Journal Article Physical Review D · October 19, 2020 We report the first measurement of the charm-mixing parameter yCP in D0 decays to the CP-odd final state KS0ω. The study uses the full Belle e+e- annihilation data sample of 976 fb-1 taken at or near the (4S) centre-of-mass energy. We find yCP=(0.96±0.91±0 ... Full text Cite

Measurements of branching fractions and CP-violating charge asymmetries in charmless $B$ decays reconstructed in 2019--2020 Belle~II data

Journal Article · September 20, 2020 We report on first measurements of branching fractions~($\mathcal{B}$) and CP-violating charge asymmetries~($\mathcal{A}$) in charmless $B$ decays at Belle~II. We use a sample of electron-positron collisions collected in 2019 and 2020 at the $\Upsilon(4S)$ ... Link to item Cite

Search for the Decay $B_s^0 \rightarrow η^\prime η$

Journal Article · September 13, 2020 In the Standard Model (SM) charmless hadronic decays $B_s^0 \rightarrow \eta^\prime \eta$ proceed via tree-level $b\to u$ and penguin $b\to s$ transitions. Penguin transitions are sensitive to Beyond-the-Standard-Model (BSM) physics scenarios and could aff ... Link to item Cite

Measurement of Hadronic Mass Moments $\langle M_X^n \rangle $ in $B \rightarrow X_c \ell ν$ Decays at Belle II

Journal Article · September 9, 2020 We present measurements of the first six hadronic mass moments in semileptonic $B \rightarrow X_c \ell \nu $ decays. The hadronic mass moments, together with other observables of inclusive $B$ decays, can be used to determine the CKM matrix element $|{V_{c ... Link to item Cite

Transverse spin effects in hard semi-inclusive collisions

Journal Article Progress in Particle and Nuclear Physics · September 1, 2020 The nucleons (protons and neutrons) are by far the most abundant form of matter in our visible Universe; they are composite particles made of quarks and gluons, the fundamental quanta of Quantum Chromo Dynamics (QCD). The usual interpretation of the nucleo ... Full text Cite

Measurement of the semileptonic $\bar{B}^0 \to D^{*+} \ell^{-} ν_{\ell}$ branching fraction with fully reconstructed $B$ meson decays and 34.6 fb$^{-1}$of Belle II data

Journal Article · August 24, 2020 We present a first measurement of the $\bar{B^{0}} \rightarrow D^{*+} \ell^{-} \nu_{\ell}$ branching fraction using fully reconstructed $B$ meson decays employing the Full Event Interpretation algorithm. Collision events corresponding to an integrated lumi ... Link to item Cite

Exclusive $B^0 \to π^- \ell^+ ν_\ell$ Decays with Hadronic Full Event Interpretation Tagging in 34.6 fb$^{-1}$ of Belle II Data

Journal Article · August 20, 2020 We present the results of the re-discovery of the decay $B^0 \to \pi^- \ell^+ \nu_\ell$ in 34.6 fb$^{-1}$ of Belle II data using hadronic $B$-tagging via the Full Event Interpretation algorithm. We observe 21 signal events on a background of 155 in a fit t ... Link to item Cite

Studies of the semileptonic $\bar B^0\to D^{*+}\ell^-\barν_\ell$ and $B^-\to D^{0}\ell^-\barν_\ell$ decay processes with 34.6 fb$^{-1}$ of Belle II data

Journal Article · August 17, 2020 We report measurements of the $\bar{B}^0 \to D^{*+} \ell^{-} \bar{\nu}_l$ and $B^- \to D^{0} \ell^{-} \bar{\nu}_l$ processes using 34.6 fb$^{-1}$ of collision events recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. ... Link to item Cite

A calibration of the Belle II hadronic tag-side reconstruction algorithm with $B \rightarrow X\ell ν$ decays

Journal Article · August 13, 2020 Tag-side reconstruction is an important method for reconstructing $B$ meson decays with missing energy. The Belle II tag-side reconstruction algorithm, Full Event Interpretation, relies on a hierarchical reconstruction of $B$ meson decays with multivariate ... Link to item Cite

$τ$ lepton mass measurement at Belle II

Journal Article · August 11, 2020 The reconstruction of tau-pair production, $e^{+}e^{-} \to \tau^{+}\tau^{-}$, from the subsequent 3-prong ($\tau^{+} \rightarrow \pi^{+} \pi^{-} \pi^{+} \bar{\nu}_{\tau}$) and 1-prong ($\tau^{-} \to \ell^{-} \bar{\nu}_{\ell} \nu_{\tau}$, $\tau^{-} \to h^{- ... Link to item Cite

Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle

Journal Article · August 10, 2020 The enhancement of charged-particle pairs with large pseudorapidity difference and small azimuthal angle difference, often referred to as the ``ridge signal'', is a phenomenon widely observed in high multiplicity proton-proton, proton-ion and deutron-ion c ... Link to item Cite

Rediscovery of $B \to φK^{()}$ decays and measurement of the longitudinal polarization fraction $f_L$ in $B \to φK^{}$ decays using the Summer 2020 Belle II dataset

Journal Article · August 9, 2020 We utilize a sample of 34.6 fb$^{-1}$, collected by the Belle II experiment at the SuperKEKB asymmetric energy $e^+e^-$ collider, to search for the $B^+ \to \phi K^+$, $B^+ \to \phi K^{*+}$, $B^0 \to \phi K^0_S$, and $B^0 \to \phi K^{*0}$ decays. Charmless ... Link to item Cite

First flavor tagging calibration using 2019 Belle II data

Journal Article · August 6, 2020 We report on the first calibration of the standard Belle II $B$-flavor tagger using the full data set collected at the $\Upsilon(4{\rm S})$ resonance in 2019 with the Belle II detector at the SuperKEKB collider, corresponding to 8.7 fb$^{-1}$ of integrated ... Link to item Cite

Erratum: Evolution of π^{0} Suppression in Au+Au Collisions from sqrt[s_{NN}]=39 to 200 GeV [Phys. Rev. Lett. 109, 152301 (2012)].

Journal Article Physical review letters · July 2020 This corrects the article DOI: 10.1103/PhysRevLett.109.152301. ... Full text Cite

Charmless $B$ decay reconstruction in 2019 Belle II data

Journal Article · May 27, 2020 We report on the reconstruction of various charmless $B$ decays from electron-positron collisions at the energy corresponding to the $\Upsilon(4S)$ resonance collected with the Belle II detector at the SuperKEKB collider. We use simulation to devise optimi ... Link to item Cite

Measurement of the $B^0$ lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset

Journal Article · May 15, 2020 This document presents the measurement of $B^0$ meson lifetimes using the 2019 Belle II dataset that corresponds to an integrated luminosity of $8.7 \pm 0.2$ fb$^{-1}$. Each candidate is fully reconstructed with hadronic decay final states on the signal si ... Link to item Cite

Update of inclusive cross sections of single and pairs of identified light charged hadrons

Journal Article Physical Review D · May 1, 2020 We report new measurements of the production cross sections of pairs of charged pions and kaons as a function of their fractional energies using various fractional-energy definitions. Two different fractional-energy definitions were used and compared to th ... Full text Cite

Measurement of the branching fraction ${\cal B}(\bar B^0\to D^{*+}\ell^-\barν_\ell)$ with early Belle II data

Journal Article · April 20, 2020 We measure the branching fractions for the decays $\bar{B}^0 \to D^{*+} e^{-} \bar{\nu}_e$ and $\bar{B}^0 \to D^{*+} \mu^{-} \bar{\nu}_\mu$ using $8.70 \pm 0.09~{\rm fb}^{-1}$ of data collected by the Belle II experiment at the SuperKEKB asymmetric-energy ... Link to item Cite

Measurement of R(D) and R(D^{*}) with a Semileptonic Tagging Method.

Journal Article Physical review letters · April 2020 The experimental results on the ratios of branching fractions R(D)=B(B[over ¯]→Dτ^{-}ν[over ¯]_{τ})/B(B[over ¯]→Dℓ^{-}ν[over ¯]_{ℓ}) and R(D^{*})=B(B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]→D^{*}ℓ^{-}ν[over ¯]_{ℓ}), where ℓ denotes an electron or a mu ... Full text Cite

Search for an Invisibly Decaying Z^{'} Boson at Belle II in e^{+}e^{-}→μ^{+}μ^{-}(e^{±}μ^{∓}) Plus Missing Energy Final States.

Journal Article Physical review letters · April 2020 Theories beyond the standard model often predict the existence of an additional neutral boson, the Z^{'}. Using data collected by the Belle II experiment during 2018 at the SuperKEKB collider, we perform the first searches for the invisible decay of a Z^{' ... Full text Cite

Observation of the Radiative Decays of ϒ(1S) to χ_{c1}.

Journal Article Physical review letters · March 2020 We report the first observation of the radiative decay of the ϒ(1S) into a charmonium state. The significance of the observed signal of ϒ(1S)→γχ_{c1} is 6.3 standard deviations including systematics. The branching fraction is calculated to be B[ϒ(1S)→γχ_{c ... Full text Cite

Study of B →p p ππ STUDY of B →p p ππ CHU K. et al.

Journal Article Physical Review D · March 1, 2020 Using a data sample of 772×106 BB pairs collected on the Ï'(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e-collider, we report the observation of B0→ppπ+π- A nd the first observation of B+→ppπ+π0. We measure a decay branching fract ... Full text Cite

Erratum: The Belle II Physics Book (Progress of Theoretical and Experimental Physics (2019) 2019 (123C01) DOI: 10.1093/ptep/ptz106)

Journal Article Progress of Theoretical and Experimental Physics · February 28, 2020 In the original version of this manuscript, an error was introduced on pp352. '2.7nb:1.6nb' has been corrected to '2.4nb:1.3nb' in the current online and printed version. doi:10.1093/ptep/ptz106. ... Full text Cite

Probing Nucleons and Nuclei in High Energy Collisions

Journal Article · February 25, 2020 This volume is a collection of contributions for the 7-week program "Probing Nucleons and Nuclei in High Energy Collisions" that was held at the Institute for Nuclear Theory in Seattle, WA, USA, from October 1 until November 16, 2018. The program was dedic ... Link to item Cite

Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment

Journal Article Chinese Physics C · February 1, 2020 From April to July 2018, a data sample at the peak energy of the γ(4S) resonance was collected with the Belle II detector at the SuperKEKB electron-positron collider. This is the first data sample of the Belle II experiment. Using Bhabha and digamma events ... Full text Cite

The Belle II physics book

Journal Article Progress of Theoretical and Experimental Physics · December 1, 2019 The Belle II detector will provide a major step forward in precision heavy flavor physics, quarkonium and exotic states, searches for dark sectors, and many other areas. The sensitivity to a large number of key observables can be improved by about an order ... Full text Cite

Azimuthal asymmetries of back-to-back π±- (π0, η, π±) pairs in e+e- annihilation

Journal Article Physical Review D · November 27, 2019 This work reports the first observation of azimuthal asymmetries around the thrust axis in e+e- annihilation of pairs of back-to-back charged pions in one hemisphere, and π0 and η mesons in the opposite hemisphere. These results are complemented by a new a ... Full text Cite

Observation of τ- →π-ντe+e- and search for τ- →π-ντμ+μ-

Journal Article Physical Review D · October 15, 2019 We present the first measurements of branching fractions of rare tau-lepton decays, τ-→π-ντ+- (=e or μ), using a data sample corresponding to 562 fb-1 collected at a center-of-mass energy of 10.58 GeV with the Belle detector at the KEKB asymmetric-energy e ... Full text Cite

First measurement of the CKM angle ϕ 3 withS B ± → D(KS0 π + π − π 0) K ± decays

Journal Article Journal of High Energy Physics · October 1, 2019 We present the first model-independent measurement of the CKM unitarity triangle angle ϕ3 using B±→ D(KS0π+π−π0) K± decays, where D indicates either a D0 or D¯ 0 meson. ... Full text Cite

Measurement of the CKM matrix element

Journal Article Physical Review D · September 11, 2019 We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| from B0→D∗-ℓ+νℓ decays, reconstructed with the full Belle data set of 711 fb-1 integrated luminosity. Two form factor parametrizations, originally conceived by the Caprini-L ... Full text Cite

Search for ω (2012) →k Ξ (1530) →kπ Ξ at Belle

Journal Article Physical Review D · August 19, 2019 Using data samples of e+e- collisions collected at the I(1S), I(2S), and I(3S) resonances with the Belle detector, we search for the three-body decay of the ω(2012) baryon to KπΞ. This decay is predicted to dominate for models describing the ω(2012) as a K ... Full text Cite

Experimental determination of the isospin of $Λ_c(2765)^+/Σ_c(2765)^+$

Journal Article · August 17, 2019 We report an experimental determination of the isospin of $\Lambda_c(2765)^+/\Sigma_c(2765)^+$ using 980 fb$^{-1}$ data in the $e^+e^-$ annihilation around $\sqrt{s} = 10.6$ GeV collected by the Belle detector located at the KEKB collider. The isospin part ... Link to item Cite

Search for B0 →x (3872)γ

Journal Article Physical Review D · July 19, 2019 We report the results of a search for the decay B0→X(3872)(→J/ψπ+π-)γ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb-1 and containing 772×106BB pairs, collected with the Belle detector at the KEKB asymmetric ... Full text Cite

Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions.

Journal Article Physical review letters · July 2019 The PHENIX collaboration presents first measurements of low-momentum (0.4 Full text Cite

Transverse momentum dependent production cross sections of charged pions, kaons and protons produced in inclusive e+e- annihilation at s =10.58 GeV

Journal Article Physical Review D · June 14, 2019 We report measurements of the production cross sections of charged pions, kaons, and protons as a function of fractional energy, the event-shape variable called thrust, and the transverse momentum with respect to the thrust axis. These measurements access ... Full text Cite

Azimuthal Harmonics in Small and Large Collision Systems at RHIC Top Energies.

Journal Article Physical review letters · May 2019 The first (v_{1}^{fluc}), second (v_{2}), and third (v_{3}) harmonic coefficients of the azimuthal particle distribution at midrapidity are extracted for charged hadrons and studied as a function of transverse momentum (p_{T}) and mean charged particle mul ... Full text Cite

Collision-energy dependence of pt correlations in Au + Au collisions at energies available at the BNL Relativistic Heavy Ion Collider

Journal Article Physical Review C · April 26, 2019 We present two-particle pt correlations as a function of event centrality for Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV at the Relativistic Heavy Ion Collider using the STAR detector. These results are compared to previous me ... Full text Cite

Measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^{\ast})$ with a semileptonic tagging method

Journal Article · April 18, 2019 We report a measurement of the ratios of branching fractions $\mathcal{R}(D) = {\cal B}(\bar{B} \to D \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B} \to D \ell^- \bar{\nu}_{\ell})$ and $\mathcal{R}(D^{\ast}) = {\cal B}(\bar{B} \to D^* \tau^- \bar{\nu}_{\tau})/{ ... Link to item Cite

Centrality and transverse momentum dependence of D0 -meson production at mid-rapidity in Au + Au collisions at s NN =200 GeV

Journal Article Physical Review C · March 20, 2019 We report a new measurement of D0-meson production at mid-rapidity (|y|<1) in Au + Au collisions at sNN=200GeV utilizing the heavy flavor tracker, a high resolution silicon detector at the STAR experiment. Invariant yields of D0 mesons with transverse mome ... Full text Cite

Constraining the initial conditions and temperature dependent viscosity with three-particle correlations in Au+Au collisions

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · March 10, 2019 We present three-particle mixed-harmonic correlations 〈cos⁡(mϕa+nϕb−(m+n)ϕc)〉 for harmonics m,n=1−3 for charged particles in sNN=200 GeV Au+Au collisions at RHIC. These measurements provide information on the thr ... Full text Cite

The proton–Ω correlation function in Au + Au collisions at s NN =200GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · March 10, 2019 We present the first measurement of the proton–Ω correlation function in heavy-ion collisions for the central (0–40%) and peripheral (40–80%) Au + Au collisions at s NN =200 GeV by the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC ... Full text Cite

Measurement of the $D^{\ast-}$ polarization in the decay $B^0 \to D^{\ast -}τ^+ν_τ$

Journal Article · March 7, 2019 We report the first measurement of the $D^{\ast -}$ meson polarization in the decay $B^0 \to D^{*-} \tau^+\nu_{\tau}$ using the full data sample of 772$\times 10^6$ $B\bar{B}$ pairs recorded with the Belle detector at the KEKB electron-positron collider. O ... Link to item Cite

Measurement of the longitudinal spin asymmetries for weak boson production in proton-proton collisions at s =510 GeV

Journal Article Physical Review D · March 1, 2019 We report new STAR measurements of the single-spin asymmetries AL for W+ and W- bosons produced in polarized proton-proton collisions at s=510 GeV as a function of the decay-positron and decay-electron pseudorapidity. The data were obtained in 2013 and cor ... Full text Cite

STAR Collaboration

Conference Nuclear Physics A · February 1, 2019 Full text Cite

PHENIX Collaboration

Conference Nuclear Physics A · February 1, 2019 Full text Cite

Observation of Transverse Λ/Λ[over ¯] Hyperon Polarization in e^{+}e^{-} Annihilation at Belle.

Journal Article Physical review letters · February 2019 We report the first observation of the spontaneous polarization of Λ and Λ[over ¯] hyperons transverse to the production plane in e^{+}e^{-} annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive Λ/Λ ... Full text Cite

Observation of B+ →p Λ ̄ K+K- and B+ → p ̄ Λk+K+ OBSERVATION of ... P.-C. LU et al.

Journal Article Physical Review D · February 1, 2019 We report the study of B+→pΛ̄K+K- and B+→p̄ΛK+K+ decays using a 772×106 BB̄ pair data sample recorded on the Ï (4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→pΛ̄K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→p̄ΛK+K+ ... Full text Cite

Measurements of branching fraction and direct CP asymmetry in B±→KS0KS0K± and a search for B±→KS0KS0π±

Journal Article Physical Review D · February 1, 2019 We study charmless hadronic decays of charged B mesons to the final states KS0KS0K± and KS0KS0π± using a 711 fb-1 data sample that contains 772×106 BB̄ pairs and was collected at the Ï (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e ... Full text Cite

Observation of Ξ(1620)^{0} and Evidence for Ξ(1690)^{0} in Ξ_{c}^{+}→Ξ^{-}π^{+}π^{+} Decays.

Journal Article Physical review letters · February 2019 We report the first observation of the double strange baryon Ξ(1620)^{0} in its decay to Ξ^{-}π^{+} via Ξ_{c}^{+}→Ξ^{-}π^{+}π^{+} decays based on a 980 fb^{-1} data sample collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider ... Full text Cite

Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B →xsγ decays

Journal Article Physical Review D · February 1, 2019 We report measurements of isospin asymmetry Δ0- and difference of direct CP asymmetries ΔACP between charged and neutral B→Xsγ decays. This analysis is based on the data sample containing 772×106BB̄ pairs that was collected with the Belle detector at the KE ... Full text Cite

Search for a Light CP-odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment.

Journal Article Physical review letters · January 2019 We report on the first Belle search for a light CP-odd Higgs boson, A^{0}, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition ϒ(2S)→ϒ(1S)π^{+}π^{-}, fol ... Full text Cite

Measurement of time-dependent CP violation in B0 → KS0 π0π0 decays

Journal Article Physical Review D · January 1, 2019 We report a measurement of time-dependent CP violation in B0→KS0π0π0 decays using a data sample of 772×106 BB pairs collected by the Belle experiment running at the ?(4S) resonance at the KEKB e+e- collider. This decay proceeds mainly via a b→sdd "penguin" ... Full text Cite

Observation of ϒ(2S)→γη_{b}(1S) Decay.

Journal Article Physical review letters · December 2018 We report the observation of ϒ(2S)→γη_{b}(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb^{-1} of e^{+}e^{-} collisions at the ϒ(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{- ... Full text Cite

Improved measurement of the longitudinal spin transfer to Λ and Λ hyperons in polarized proton-proton collisions at s =200 GeV

Journal Article Physical Review D · December 1, 2018 The longitudinal spin transfer DLL to Λ and Λ hyperons produced in high-energy polarized proton-proton collisions is expected to be sensitive to the helicity distribution functions of strange quarks and antiquarks of the proton, and to longitudinally polar ... Full text Cite

Measurement of the decays Λc → Σππ at Belle

Journal Article Physical Review D · December 1, 2018 We report measurements of the branching fractions of the decays Λc+→Σ+π-π+, Λc+→Σ0π+π0 and Λc+→Σ+π0π0 relative to the reference channel Λc+→pK-π+. The analysis is based on the full data sample collected at and near the (4S) resonance by the Belle detector ... Full text Cite

J/ψ production cross section and its dependence on charged-particle multiplicity in p + p collisions at s=200 GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · November 10, 2018 We present a measurement of inclusive J/ψ production at mid-rapidity (|y|<1) in p+p collisions at a center-of-mass energy of s=200 GeV with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The differential production cross section for J/ψ ... Full text Cite

Erratum: Observation of D^{0} Meson Nuclear Modifications in Au+Au Collisions at sqrt[s_{NN}]=200 GeV [Phys. Rev. Lett. 113, 142301 (2014)].

Journal Article Physical review letters · November 2018 This corrects the article DOI: 10.1103/PhysRevLett.113.142301. ... Full text Cite

Transverse spin transfer to Λ and Λ hyperons in polarized proton-proton collisions at s =200 GeV

Journal Article Physical Review D · November 1, 2018 The transverse spin transfer from polarized protons to Λ and Λ hyperons is expected to provide sensitivity to the transversity distribution of the nucleon and to the transversely polarized fragmentation functions. We report the first measurement of the tra ... Full text Cite

Measurements of Dielectron Production in Au$+$Au Collisions at $\sqrt{s_{NN}}$= 27, 39, and 62.4 GeV from the STAR Experiment

Journal Article · October 23, 2018 We report systematic measurements of dielectron ($e^{\pm}e^{\pm}$) invariant-mass $M_{ee}$ spectra at mid-rapidity in Au+Au collisions at $\sqrt{s_{NN}}$ = 27, 39, and 62.4 GeV taken with the STAR detector at the Relativistic Heavy Ion Collider. For all en ... Link to item Cite

Collision energy dependence of moments of net-kaon multiplicity distributions at RHIC

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · October 10, 2018 Fluctuations of conserved quantities such as baryon number, charge, and strangeness are sensitive to the correlation length of the hot and dense matter created in relativistic heavy-ion collisions and can be used to search for the QCD critical point. We re ... Full text Cite

Novel experimental probes of QCD in SIDIS and $e^+e^-$ annihilation

Journal Article · October 4, 2018 Semi-inclusive deep inelastic Scattering (SIDIS) has been a very successful tool to investigate the partonic structure of the nucleon over the last decade. Compared to inclusive DIS, information about the quantum numbers of the struck quark can be inferred ... Link to item Cite

Measurement of ηc (1S), ηc (2S), and nonresonant η′π+π- production via two-photon collisions

Journal Article Physical Review D · October 1, 2018 We report the measurement of γγ→ηc(1S),ηc(2S)→η′π+π- with η′ decays to γρ and ηπ+π- using 941 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The ηc(1S) mass and width are measured to be M=[2984.6±0.7 (stat)±2.2 ... Full text Cite

Harmonic decomposition of three-particle azimuthal correlations at energies available at the BNL Relativistic Heavy Ion Collider

Journal Article Physical Review C · September 28, 2018 We present measurements of three-particle correlations for various harmonics in Au+Au collisions at energies ranging from sNN=7.7 to 200 GeV using the STAR detector. The quantity (cos(mφ1+nφ2-(m+n)φ3)), with φ being the azimuthal angles of the particles is ... Full text Cite

Erratum: Observation of $D^0$ meson nuclear modifications in Au+Au collisions at $\sqrt{s_{_{\mathrm{NN}}}}$ = 200 GeV

Journal Article · September 23, 2018 In this erratum we report changes on the $D^0$ $p_T$ spectra and nuclear modification factor ($R_{AA}$) in Au+Au collisions at $\sqrt{s_{_{\mathrm{NN}}}}$ = 200 GeV by fixing the errors in the efficiency and selection criteria that affected the Au+Au resul ... Link to item Cite

Beam energy dependence of rapidity-even dipolar flow in Au+Au collisions

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · September 10, 2018 New measurements of directed flow for charged hadrons, characterized by the Fourier coefficient v1, are presented for transverse momenta pT, and centrality intervals in Au+Au collisions recorded by the STAR experiment for the center-o ... Full text Cite

Low-p_{T} e^{+}e^{-} Pair Production in Au+Au Collisions at sqrt[s_{NN}]=200 GeV and U+U Collisions at sqrt[s_{NN}]=193 GeV at STAR.

Journal Article Physical review letters · September 2018 We report first measurements of e^{+}e^{-} pair production in the mass region 0.4 Full text Cite

Correlation measurements between flow harmonics in Au+Au collisions at RHIC

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · August 10, 2018 Flow harmonics (vn) in the Fourier expansion of the azimuthal distribution of particles are widely used to quantify the anisotropy in particle emission in high-energy heavy-ion collisions. The symmetric cumulants, SC(m,n), are used to measure th ... Full text Cite

Cross section and longitudinal single-spin asymmetry AL for forward W± →μ±ν production in polarized p+p collisions at s =510 GeV

Journal Article Physical Review D · August 1, 2018 We have measured the cross section and single-spin asymmetries from forward W±→μ±ν production in longitudinally polarized p+p collisions at s=510 GeV using the PHENIX detector at the Relativistic Heavy Ion Collider. The cross sections are consistent with p ... Full text Cite

Observation of an Excited Ω^{-} Baryon.

Journal Article Physical review letters · August 2018 Using data recorded with the Belle detector, we observe a new excited hyperon, an Ω^{*-} candidate decaying into Ξ^{0}K^{-} and Ξ^{-}K_{S}^{0} with a mass of 2012.4±0.7(stat)±0.6(syst) MeV/c^{2} and a width of Γ=6.4_{-2.0}^{+2.5}(stat)±1.6(syst) MeV. The ... Full text Cite

Inclusive study of bottomonium production in association with an η meson in e+e- annihilations near Υ(5 S) : Belle Collaboration

Journal Article European Physical Journal C · August 1, 2018 We study bottomonium production in association with an η meson in e+e- annihilations near the Υ(5 S) , at a centre-of-mass energy of s=10.866 GeV. The results are based on the 121.4 fb- 1 data sample collected by the Belle ... Full text Cite

Longitudinal double-spin asymmetries for dijet production at intermediate pseudorapidity in polarized pp collisions at s =200 GeV

Journal Article Physical Review D · August 1, 2018 We present the first measurements of the longitudinal double-spin asymmetry ALL for dijets with at least one jet reconstructed within the pseudorapidity range 0.8<η<1.8. The dijets were measured in polarized pp collisions at a center-of-mass energy s=200 G ... Full text Cite

Longitudinal double-spin asymmetries for p0s in the forward direction for 510 GeV polarized pp collisions

Journal Article Physical Review D · August 1, 2018 The STAR Collaboration reports measurements of the longitudinal double-spin asymmetry, ALL, for neutral pions produced at forward directions in polarized proton-proton collisions, at a center-of-mass energy of 510 GeV. Results are given for transverse mome ... Full text Cite

Study of charmless decays $B^{\pm} \to K^{0}_{S} K^{0}_{S} h^{\pm}$ ($h=K,π$) at Belle

Journal Article · August 1, 2018 We report a search for charmless hadronic decays of charged $B$ mesons to the final states $K^{0}_{S} K^{0}_{S} K^{\pm}$ and $K^{0}_{S} K^{0}_{S} \pi^{\pm}$ . The results are based on a $711 {fb}^{-1}$ data sample that contains $772 \times 10^6$ $B \bar{B} ... Link to item Cite

Azimuthal anisotropy in Cu+Au collisions at s NN =200 GeV

Journal Article Physical Review C · July 31, 2018 The azimuthal anisotropic flow of identified and unidentified charged particles has been systematically studied in Cu+Au collisions at sNN=200 GeV for harmonics n=1-4 in the pseudorapidity range |η|<1. The directed flow in Cu+Au collisions is compared with ... Full text Cite

Global polarization of Λ hyperons in Au + Au collisions at sNN =200 GeV

Journal Article Physical Review C · July 23, 2018 Global polarization of Λ hyperons has been measured to be of the order of a few tenths of a percentage in Au+Au collisions at sNN = 200 GeV, with no significant difference between Λ and Λ. These new results reveal the collision energy dependence of the glo ... Full text Cite

Measurements of branching fraction and $CP$ asymmetry of the $\bar{B}^{0}(B^{0})\to K^{0}_{S}K^{\mp}π^{\pm}$ decay at Belle

Journal Article · July 18, 2018 We report the measurement of the branching fraction and $CP$ asymmetry for the $\bar{B}^{0}(B^{0})\to K^{0}_{S}K^{\mp}\pi^{\pm}$ decay. The analysis is performed on a data sample of 711 $\rm{fb}^{-1}$ collected at the $\Upsilon(4S)$ resonance with the Bell ... Link to item Cite

Measurement of the branching fraction of B →d (∗)πν at Belle using hadronic tagging in fully reconstructed events

Journal Article Physical Review D · July 1, 2018 We report a measurement of the branching fractions of the decays B→D(∗)πν. The analysis uses 772×106 BB. pairs produced in e+e-→(4S) data recorded by the Belle experiment at the KEKB asymmetric-energy e+e- collider. The tagging B meson in the decay is full ... Full text Cite

Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at sqrt[s_{NN}]=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV.

Journal Article Physical review letters · July 2018 We report measurements of the nuclear modification factor R_{CP} for charged hadrons as well as identified π^{+(-)}, K^{+(-)}, and p(p[over ¯]) for Au+Au collision energies of sqrt[s_{NN}]=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear hig ... Full text Cite

Lévy-stable two-pion Bose-Einstein correlations in s NN =200 GeV Au+Au collisions

Journal Article Physical Review C · June 14, 2018 We present a detailed measurement of charged two-pion correlation functions in 0-30% centrality sNN=200 GeV Au+Au collisions by the PHENIX experiment at the Relativistic Heavy Ion Collider. The data are well described by Bose-Einstein correlation functions ... Full text Cite

Search for ϒ(1S,2S)→Zc+Zc(′)− and e+e−→Zc+Zc(′)− at s=10.52 , 10.58, and 10.867 GeV

Journal Article Physical Review D · June 14, 2018 The first search for double charged charmoniumlike state production in Ï?(1S) and Ï?(2S) decays and in e+e- annihilation at s=10.52, 10.58, and 10.867 GeV is conducted using data collected with the Belle detector at the KEKB asymmetric energy electron-posi ... Full text Cite

Measurement of the H Λ3 lifetime in Au+Au collisions at the BNL Relativistic Heavy Ion Collider

Journal Article Physical Review C · May 22, 2018 An improved measurement of the HΛ3 lifetime is presented. In this paper, the mesonic decay modes HΛ3→He3 + π- and HΛ3→d+p+π- are used to reconstruct the HΛ3 from Au+Au collision data collected by the STAR collaboration at Relativistic Heavy Ion Collider (R ... Full text Cite

Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p↑ + p collisions at s=500 GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · May 10, 2018 The transversity distribution, which describes transversely polarized quarks in transversely polarized nucleons, is a fundamental component of the spin structure of the nucleon, and is only loosely constrained by global fits to existing semi-inclusive deep ... Full text Cite

Measurement of time-dependent CP asymmetries in B0 → KS0 ηγ decays

Journal Article Physical Review D · May 1, 2018 We report a measurement of time-dependent CP violation parameters in B0→KS0ηγ decays. The study is based on a data sample, containing 772×106BB pairs, that was collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- colli ... Full text Cite

Erratum: Search for B →hν ν decays with semileptonic tagging at Belle (Physical Review D (2017) (R) 96 (091101) DOI: 10.1103/PhysRevD.96.091101)

Journal Article Physical Review D · May 1, 2018 This paper was published online on 27 November 2017 with an incomplete Table. Table I was missing the second row in section (b). The Table has been corrected as of 1 May 2018. The Table is incorrect in the printed version of the journal; therefore, for the ... Full text Cite

Production cross sections of hyperons and charmed baryons from e+e- annihilation near s =10.52 GeV

Journal Article Physical Review D · April 1, 2018 We measure the inclusive production cross sections of hyperons and charmed baryons from e+e- annihilation using a 800 fb-1 data sample taken near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The feed-down contribu ... Full text Cite

Study of KS0 pair production in single-tag two-photon collisions

Journal Article Physical Review D · March 1, 2018 We report a measurement of the cross section for KS0 pair production in single-tag two-photon collisions, γ∗γ→KS0KS0, for Q2 up to 30 GeV2, where Q2 is the negative of the invariant mass squared of the tagged photon. The measurement covers the kinematic ra ... Full text Cite

Observation of Ξ c(2930) 0 and updated measurement of B-→K-Λc+Λ¯c- at Belle: Belle Collaboration

Journal Article European Physical Journal C · March 1, 2018 We report the first observation of the Ξ c(2930) 0 charmed-strange baryon with a significance greater than 5σ. The Ξ c(2930) 0 is found in its decay to K-Λc+ in B-→K-Λc+Λ¯c- decays. The measured mass and width ar ... Full text Cite

Beam-Energy Dependence of Directed Flow of Λ, Λ[over ¯], K^{±}, K_{s}^{0}, and ϕ in Au+Au Collisions.

Journal Article Physical review letters · February 2018 Rapidity-odd directed-flow measurements at midrapidity are presented for Λ, Λ[over ¯], K^{±}, K_{s}^{0}, and ϕ at sqrt[s_{NN}]=7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV in Au+Au collisions recorded by the Solenoidal Tracker detector at the Relativis ... Full text Cite

Measurement of branching fractions of hadronic decays of the Ω c 0 baryon

Journal Article Physical Review D · February 1, 2018 Using a data sample of 980 fb-1 of e+e- annihilation data taken with the Belle detector operating at the KEKB asymmetric-energy e+e- collider, we report the results of a study of the decays of the Ωc0 charmed baryon into hadronic final states. We report th ... Full text Cite

Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at s = 500 GeV

Journal Article Physical Review D · February 1, 2018 We report the first measurements of transverse single-spin asymmetries for inclusive jet and jet+π± production at midrapidity from transversely polarized proton-proton collisions at s=500 GeV. The data were collected in 2011 with the STAR detector sampled ... Full text Cite

Measurement of the τ Michel parameters η and ξκ in the radiative leptonic decay τ- → l- ντνlγ

Journal Article Progress of Theoretical and Experimental Physics · February 1, 2018 We present a measurement of the Michel parameters of the τ lepton, η and ξκ, in the radiative leptonic decay τ- → l- ντνlγ using 711 fb-1 of collision data collected with the Belle detector at the KEKB ... Full text Cite

Measurement of the τ lepton polarization and R(D) in the decay B¯→Dτ−ν¯τ with one-prong hadronic τ decays at Belle

Journal Article Physical Review D · January 1, 2018 With the full data sample of 772×106 BB̄ pairs recorded by the Belle detector at the KEKB electron-positron collider, the decay B̄→D∗τ-ν̄τ is studied with the hadronic τ decays τ-→π-ντ and τ-→ρ-ντ. The τ polarization Pτ(D∗) in two-body hadronic τ decays is me ... Full text Cite

Measurement of the D^∗− polarization in the decay B⁰ → D^∗−τ⁺ντ

Conference 10th International Workshop on the CKM Unitarity Triangle, CKM 2018 · January 1, 2018 © 2018 Heidelberg University. All rights reserved. We report the first measurement of the D∗− meson polarization in the decay B0 → D∗−τ+ντ using the full data sample of 772×106 BB¯ pairs recorded with the Belle detector at the KEKB electron-positron collid ... Cite

Measurement of the D^∗− polarization in the decay B⁰ → D^∗−τ⁺ντ

Measurement of the D∗− polarization in the decay B0 → D∗−τ+ντ

Conference 10th International Workshop on the Ckm Unitarity Triangle Ckm 2018 · January 1, 2018 We report the first measurement of the D∗− meson polarization in the decay B0 → D∗−τ+ντ using the full data sample of 772×106 BB¯ pairs recorded with the Belle detector at the KEK ... Cite

Search for light tetraquark states in ϒ(1S) and ϒ(2S) decays

Journal Article Physical Review D · December 1, 2017 We search for the JPC = 0−− and 1þ− light tetraquark states with masses up to 2.46 GeV=c2 in ϒð1SÞ and ϒð2SÞ decays with data samples of ð102 2Þ million and ð158 4Þ million events, respectively, collected with the Belle det ... Full text Cite

Measurement of the branching fraction and CP asymmetry in B0 → π0π0 decays, and an improved constraint on ϕ2

Journal Article Physical Review D · December 1, 2017 We measure the branching fraction and CP violation asymmetry in the decay B0 → π0π0, using a data sample of 752 × 106 BB¯ pairs collected at the ϒð4SÞ resonance with the Belle detector at the KEKB e Full text Cite

Publisher’s Note: Search for B→hνν¯ decays with semileptonic tagging at Belle [Phys. Rev. D 96 , 091101(R) (2017)]

Journal Article Physical Review D · November 27, 2017 We present the results of a search for the rare decays B→hνν, where h stands for K+,KS0,K∗+,K∗0,π+,π0,ρ+ and ρ0. The results are obtained with 772×106 BB pairs collected with the Belle detector at the KEKB e+e- collider. We reconstruct one B meson in a sem ... Full text Cite

Coherent diffractive photoproduction of ρ0 mesons on gold nuclei at 200 GeV/nucleon-pair at the Relativistic Heavy Ion Collider

Journal Article Physical Review C · November 13, 2017 The STAR Collaboration reports on the photoproduction of π+π- pairs in gold-gold collisions at a center-of-mass energy of 200 GeV/nucleon-pair. These pion pairs are produced when a nearly real photon emitted by one ion scatters from the other ion. We fit t ... Full text Cite

Evidence for Isospin Violation and Measurement of CP Asymmetries in B→K^{*}(892)γ.

Journal Article Physical review letters · November 2017 We report the first evidence for isospin violation in B→K^{*}γ and the first measurement of the difference of CP asymmetries between B^{+}→K^{*+}γ and B^{0}→K^{*0}γ. This analysis is based on the data sample containing 772×10^{6}BB[over ¯] pairs that was c ... Full text Cite

PHENIX Collaboration

Conference Nuclear Physics A · November 1, 2017 Full text Cite

STAR Collaboration

Conference Nuclear Physics A · November 1, 2017 Full text Cite

Bulk properties of the medium produced in relativistic heavy-ion collisions from the beam energy scan program

Journal Article Physical Review C · October 13, 2017 We present measurements of bulk properties of the matter produced in Au+Au collisions at sNN=7.7,11.5,19.6,27, and 39 GeV using identified hadrons (π±, K±, p, and p) from the STAR experiment in the Beam Energy Scan (BES) Program at the Relativistic Heavy I ... Full text Cite

Search for CP Violation and Measurement of the Branching Fraction in the Decay D^{0}→K_{S}^{0}K_{S}^{0}.

Journal Article Physical review letters · October 2017 We report a study of the decay D^{0}→K_{S}^{0}K_{S}^{0} using 921 fb^{-1} of data collected at or near the ϒ(4S) and ϒ(5S) resonances with the Belle detector at the KEKB asymmetric energy e^{+}e^{-} collider. The measured time-integrated CP asymmetry is A ... Full text Cite

Study of η and dipion transitions in ϒ(4S) decays to lower bottomonia

Journal Article Physical Review D · September 1, 2017 We study hadronic transitions between bottomonium states using 496 fb-1 data collected at the ?(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e-collider. We measure B(?(4S)→π+π(1S))=(8.2±0.5(stat)±0.4(syst))×10-5, B(?(4S)→π+π(2S))=( ... Full text Cite

Measurements of jet quenching with semi-inclusive hadron+jet distributions in Au+Au collisions at sNN =200 GeV

Journal Article Physical Review C · August 14, 2017 The STAR Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum hadron trigger, in central and peripheral Au+Au collisions at sNN=200 GeV. Charged jets are reconstructed with ... Full text Cite

Energy dependence of J/ψ production in Au + Au collisions at sNN=39,62.4 and 200GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · August 10, 2017 The inclusive J/ψ transverse momentum spectra and nuclear modification factors are reported at mid-rapidity (|y|<1.0) in Au + Au collisions at sNN = 39, 62.4 and 200 GeV taken by the STAR experiment. A suppression of J/ψ production, with respect ... Full text Cite

Dijet imbalance measurements in Au+Au and pp collisions at sqrt[s_{NN}]=200 GeV at STAR.

Journal Article Physical review letters · August 2017 We report the first dijet transverse momentum asymmetry measurements from Au+Au and pp collisions at RHIC. The two highest-energy back-to-back jets reconstructed from fragments with transverse momenta above 2 GeV/c display a significantly higher momentum ... Full text Cite

Global Λ hyperon polarization in nuclear collisions.

Journal Article Nature · August 2017 The extreme energy densities generated by ultra-relativistic collisions between heavy atomic nuclei produce a state of matter that behaves surprisingly like a fluid, with exceptionally high temperature and low viscosity. Non-central collisions have angular ... Full text Cite

Invariant-mass and fractional-energy dependence of inclusive production of dihadrons in e + e − annihilation at √s = 10.58 GeV

Journal Article Physical Review D · August 1, 2017 The inclusive cross sections for dihadrons of charged pions and kaons (e+e− → hhX) in electron-positron annihilation are reported. They are obtained as a function of the total fractional energy and invariant mass for any di-hadron com ... Full text Cite

Direct virtual photon production in Au+Au collisions at sNN=200 GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · July 10, 2017 We report the direct virtual photon invariant yields in the transverse momentum ranges 1T<3 GeV/c and 5T<10 GeV/c at mid-rapidity derived from the dielectron invariant mass continuum region 0.10ee<0.28 GeV/c2 Full text Cite

Observation of an alternative χc0(2P) candidate in e+e−→J/ψDD¯

Journal Article Physical Review D · June 1, 2017 We perform a full amplitude analysis of the process e+e-→J/ψDD, where D refers to either D0 or D+. A new charmoniumlike state X∗(3860) that decays to DD is observed with a significance of 6.5σ. Its mass is (3862-32+26 -13+40) MeV/c2, and its width is (201- ... Full text Cite

Measurement of the Michel parameters (, ξκ ) in the radiative leptonic decay of τ

Journal Article Nuclear and Particle Physics Proceedings · June 2017 Full text Cite

Measurement of D^{0} Azimuthal Anisotropy at Midrapidity in Au+Au Collisions at sqrt[s_{NN}]=200 GeV.

Journal Article Physical review letters · May 2017 We report the first measurement of the elliptic anisotropy (v_{2}) of the charm meson D^{0} at midrapidity (|y|<1) in Au+Au collisions at sqrt[s_{NN}]=200 GeV. The measurement was conducted by the STAR experiment at RHIC utilizing a new high-resolution si ... Full text Cite

First measurement of T -odd moments in D0 → KS0 π+π-π0 decays

Journal Article Physical Review D · May 1, 2017 We report the first measurement of the T-odd moments in the decay D0→KS0π+π-π0 from a data sample corresponding to an integrated luminosity of 966 fb-1 collected by the Belle experiment at the KEKB asymmetric-energy e+e- collider. From these moments we det ... Full text Cite

Measurement of the τ Lepton Polarization and R(D^{}) in the Decay B[over ¯]→D^{}τ^{-}ν[over ¯]_{τ}.

Journal Article Physical review letters · May 2017 We report the first measurement of the τ lepton polarization P_{τ}(D^{*}) in the decay B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ} as well as a new measurement of the ratio of the branching fractions R(D^{*})=B(B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]→D^{*}ℓ^{ ... Full text Cite

Measurement of the cross section and longitudinal double-spin asymmetry for dijet production in polarized pp collisions at s =200 GeV

Journal Article Physical Review D · April 1, 2017 We report the first measurement of the longitudinal double-spin asymmetry ALL for midrapidity dijet production in polarized pp collisions at a center-of-mass energy of s=200 GeV. The dijet cross section was measured and is shown to be consistent with next- ... Full text Cite

Elliptic flow of electrons from heavy-flavor hadron decays in Au + Au collisions at √sNN =200, 62.4, and 39 GeV

Journal Article Physical Review C · March 13, 2017 We present measurements of elliptic flow (v2) of electrons from the decays of heavy-flavor hadrons (eHF) by the STAR experiment. For Au+Au collisions at sNN=200 GeV we report v2, for transverse momentum (pT) between 0.2 and 7 GeV/c, using three methods: th ... Full text Cite

Lepton-Flavor-Dependent Angular Analysis of B→K^{*}ℓ^{+}ℓ^{-}.

Journal Article Physical review letters · March 2017 We present a measurement of angular observables and a test of lepton flavor universality in the B→K^{*}ℓ^{+}ℓ^{-} decay, where ℓ is either e or μ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb^{-1} containi ... Full text Cite

Coherent diffractive photoproduction of $ρ^{0}$ mesons on gold nuclei at RHIC

Journal Article · February 24, 2017 The STAR Collaboration reports on the photoproduction of $\pi^+\pi^-$ pairs in gold-gold collisions at a center-of-mass energy of 200 GeV/nucleon-pair. These pion pairs are produced when a nearly-real photon emitted by one ion scatters from the other ion. ... Link to item Cite

Precise determination of the CKM matrix element $\left| V_{cb}\right|$ with $\bar B^0 \to D^{*\,+} \, \ell^- \, \bar ν_\ell$ decays with hadronic tagging at Belle

Journal Article · February 6, 2017 The precise determination of the CKM matrix element $\left| V_{cb}\right|$ is important for carrying out tests of the flavour sector of the Standard Model. In this article we present a preliminary analysis of the $\bar B^0 \to D^{*\,+} \, \ell^- \, \bar \n ... Link to item Cite

Parton Radiation and Fragmentation from LHC to FCC-ee

Journal Article · February 4, 2017 This document collects the proceedings of the "Parton Radiation and Fragmentation from LHC to FCC-ee" workshop (http://indico.cern.ch/e/ee\_jets16) held at CERN in Nov. 2016. The writeup reviews the latest theoretical and experimental developments on parto ... Link to item Cite

Observation of D^{0}→ρ^{0}γ and Search for CP Violation in Radiative Charm Decays.

Journal Article Physical review letters · February 2017 We report the first observation of the radiative charm decay D^{0}→ρ^{0}γ and the first search for CP violation in decays D^{0}→ρ^{0}γ, ϕγ, and K[over ¯]^{*0}(892)γ, using a data sample of 943 fb^{-1} collected with the Belle detector at the KEKB asymmetr ... Full text Cite

Charge-Dependent Directed Flow in Cu+Au Collisions at sqrt[s_{NN}]=200 GeV.

Journal Article Physical review letters · January 2017 We present the first measurement of charge-dependent directed flow in Cu+Au collisions at sqrt[s_{NN}]=200 GeV. The results are presented as a function of the particle transverse momentum and pseudorapidity for different centralities. A finite difference ... Full text Cite

ϒ production in U + U collisions at sNN =193 GeV measured with the STAR experiment

Journal Article Physical Review C · December 15, 2016 We present a measurement of the inclusive production of ϒ mesons in U+U collisions at sNN=193 GeV at midrapidity (|y|<1). Previous studies in central Au+Au collisions at sNN=200 GeV show a suppression of ϒ(1S+2S+3S) production relative to expectations from ... Full text Cite

Lepton-Flavor-Dependent Angular Analysis of $B\to K^\ast \ell^+\ell^-$

Journal Article · December 15, 2016 We present a measurement of angular observables and a test of lepton flavor universality in the $B\to K^\ast \ell^+\ell^-$ decay, where $\ell$ is either $e$ or $\mu$. The analysis is performed on a data sample corresponding to an integrated luminosity of $ ... Link to item Cite

Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at sNN =200 GeV

Journal Article Physical Review C · December 6, 2016 The PHENIX experiment at the BNL Relativistic Heavy Ion Collider has measured second- and third-order Fourier coefficients of the azimuthal distributions of direct photons emitted at midrapidity in Au+Au collisions at sNN=200 GeV for various collision cent ... Full text Cite

PHENIX Collaboration

Conference Nuclear Physics A · December 1, 2016 Full text Cite

STAR Collaboration

Conference Nuclear Physics A · December 1, 2016 Full text Cite

Observation of Transverse $Λ/\barΛ$ Hyperon Polarization in $e^+e^-$ Annihilation at Belle

Journal Article · November 21, 2016 We report the first observation of the polarization of $\Lambda/\bar{\Lambda}$ hyperons transverse to its production plane in $e^+e^-$ annihilation. We observe a significant polarization that rises with the fractional energy carried by the hyperon as well ... Link to item Cite

Parton fragmentation functions

Journal Article Progress in Particle and Nuclear Physics · November 1, 2016 The field of fragmentation functions of light quarks and gluons is reviewed. In addition to integrated fragmentation functions, attention is paid to the dependence of fragmentation functions on transverse momenta and on polarization degrees of freedom. Hig ... Full text Cite

Study of Two-Body $e^+e^- \to B_s^{()}\bar{B}_s^{()}$ Production in the Energy Range from 10.77 to 11.02 GeV

Journal Article · September 27, 2016 We report results on the studies of the $e^+e^-\to B_s^{(*)}\bar{B}_s^{(*)}$ processes. The results are based on a $121.4$ fb$^{-1}$ data sample collected with the Belle detector at the center-of-mass energy near the $\Upsilon(10860)$ peak and $16.4$ fb$^{ ... Link to item Cite

Measurement of elliptic flow of light nuclei at sNN =200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV at the BNL Relativistic Heavy Ion Collider

Journal Article Physical Review C · September 23, 2016 We present measurements of second-order azimuthal anisotropy (v2) at midrapidity (|y|<1.0) for light nuclei d,t,He3 (for sNN=200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV) and antinuclei d; (sNN=200, 62.4, 39, 27, and 19.6 GeV) and Hē3 (sNN=200 GeV) in the ST ... Full text Cite

Measurement of $CP$ asymmetry in the $D^{0} \to K^0_S K^0_S$ decay at Belle

Journal Article · September 20, 2016 We report a measurement of the time-integrated $CP$ asymmetry in the neutral charm meson decay $D^0 \to K^0_S K^0_S$ using 921~fb$^{-1}$ data collected at the $\Upsilon(4S)$ and $\Upsilon(5S)$ resonances with the Belle detector at the KEKB asymmetric-energ ... Link to item Cite

Evidence for the decay $B^{0}\to ηη$

Journal Article · September 12, 2016 We report a search for $B^{0}\to \eta \eta $ with a data sample corresponding to an integrated luminosity of $698 \,{\rm fb}^{-1}$ containing $753 \times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB ... Link to item Cite

Jet-like correlations with direct-photon and neutral-pion triggers at sNN=200 GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · September 10, 2016 Azimuthal correlations of charged hadrons with direct-photon (γdir) and neutral-pion (π0) trigger particles are analyzed in central Au+Au and minimum-bias p+p collisions at sNN=200 GeV in the STAR experiment. The charged-ha ... Full text Cite

Energy Scan of the e^{+}e^{-}→h_{b}(nP)π^{+}π^{-} (n=1, 2) Cross Sections and Evidence for ϒ(11020) Decays into Charged Bottomoniumlike States.

Journal Article Physical review letters · September 2016 Using data collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider, we measure the energy dependence of the e^{+}e^{-}→h_{b}(nP)π^{+}π^{-} (n=1, 2) cross sections from thresholds up to 11.02 GeV. We find clear ϒ(10860) and ϒ(110 ... Full text Cite

Measurement of the $τ$ lepton polarization in the decay ${\bar B} \rightarrow D^* τ^- {\bar ν_τ}$

Journal Article · August 23, 2016 We report the first measurement of the $\tau$ lepton polarization in the decay ${\bar B} \rightarrow D^* \tau^- {\bar\nu_{\tau}}$ as well as a new measurement of the ratio of the branching fractions $R(D^{*}) = \mathcal{B}({\bar B} \rightarrow D^* \tau^- { ... Link to item Cite

Beam-energy dependence of charge balance functions from Au + Au collisions at energies available at the BNL Relativistic Heavy Ion Collider

Journal Article Physical Review C · August 16, 2016 Balance functions have been measured in terms of relative pseudorapidity (Δη) for charged particle pairs at the BNL Relativistic Heavy Ion Collider from Au + Au collisions at sNN=7.7GeV to 200 GeV using the STAR detector. These results are compared with ba ... Full text Cite

Near-side azimuthal and pseudorapidity correlations using neutral strange baryons and mesons in d+ Au, Cu + Cu, and Au + Au collisions at sNN =200 GeV

Journal Article Physical Review C · July 28, 2016 We present measurements of the near side of triggered di-hadron correlations using neutral strange baryons (Λ,Λ) and mesons (KS0) at intermediate transverse momentum (3 < pT <6 GeV/c) to look for possible flavor and baryon-meson dependence. This study is p ... Full text Cite

First Observation of the Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: Λ_{c}^{+}→pK^{+}π^{-}.

Journal Article Physical review letters · July 2016 We report the first observation of the decay Λ_{c}^{+}→pK^{+}π^{-} using a 980 fb^{-1} data sample collected by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. This is the first observation of a doubly Cabibbo-suppressed decay of a c ... Full text Cite

J/ψ production at low transverse momentum in p+p and d + Au collisions at sNN =200 GeV

Journal Article Physical Review C · June 10, 2016 We report on the measurement of J/ψ production in the dielectron channel at midrapidity (|y|<1) in p+p and d+Au collisions at sNN=200GeV from the STAR experiment at the Relativistic Heavy Ion Collider. The transverse momentum pT spectra in p+p for pT<4GeV/ ... Full text Cite

Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) Decays

Journal Article · June 3, 2016 We report a study of radiative decays of \chi_{bJ}(1P)(J=0,1,2) mesons into 74 hadronic final states comprising charged and neutral pions, kaons, protons; out of these, 41 modes are observed with at least 5 standard deviation significance. Our measurements ... Link to item Cite

Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$

Journal Article · April 14, 2016 We present a measurement of angular observables, $P_4'$, $P_5'$, $P_6'$, $P_8'$, in the decay $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$, where $\ell^+\ell^-$ is either $e^+e^-$ or $\mu^+\mu^-$. The analysis is performed on a data sample corresponding to an int ... Link to item Cite

Observation of the Decay B_{s}^{0}→K^{0}K[over ¯]^{0}.

Journal Article Physical review letters · April 2016 We measure the decay B_{s}^{0}→K^{0}K[over ¯]^{0} using data collected at the ϒ(5S) resonance with the Belle detector at the KEKB e^{+}e^{-} collider. The data sample used corresponds to an integrated luminosity of 121.4 fb^{-1}. We measure a branching fr ... Full text Cite

Measurement of the Transverse Single-Spin Asymmetry in p^{↑}+p→W^{±}/Z^{0} at RHIC.

Journal Article Physical review letters · April 2016 We present the measurement of the transverse single-spin asymmetry of weak boson production in transversely polarized proton-proton collisions at sqrt[s]=500 GeV by the STAR experiment at RHIC. The measured observable is sensitive to the Sivers function, ... Full text Cite

First model-independent Dalitz analysis of B0 → DK∗0, D → KS π+π-decay

Journal Article Progress of Theoretical and Experimental Physics · April 1, 2016 We report a measurement of the amplitude ratio rS of B → DK∗and B → D K∗decays with a Dalitz analysis of D → KS 0π +π-decays, for the first time using a modelindependent method. We set an upper limit rS < 0.87 at the 68% confidence level, using the full da ... Full text Cite

Measurement of the branching ratio of $\bar{B}^0 \rightarrow D^{+} τ^- \barν_τ$ relative to $\bar{B}^0 \rightarrow D^{+} \ell^- \barν_{\ell}$ decays with a semileptonic tagging method

Journal Article · March 22, 2016 We report a measurement of ratio ${\cal R}(D^*) = {\cal B}(\bar{B}^0 \rightarrow D^{*+} \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B}^0 \rightarrow D^{*+} \ell^- \bar{\nu}_{\ell})$, where $\ell$ denotes an electron or a muon. The results are based on a data sa ... Link to item Cite

Search for the rare decay D0 →γγ at Belle

Journal Article Physical Review D · March 9, 2016 We search for the rare radiative decay D0→γγ using a data sample with an integrated luminosity of 832 fb-1 recorded by the Belle detector at the KEKB e+e- asymmetric-energy collider. We find no statistically significant signal and set an upper limit on the ... Full text Cite

Beam Energy Dependence of the Third Harmonic of Azimuthal Correlations in Au+Au Collisions at RHIC.

Journal Article Physical review letters · March 2016 We present results from a harmonic decomposition of two-particle azimuthal correlations measured with the STAR detector in Au+Au collisions for energies ranging from sqrt[s_{NN}]=7.7 to 200 GeV. The third harmonic v_{3}^{2}{2}=⟨cos3(ϕ_{1}-ϕ_{2})⟩, where ϕ_ ... Full text Cite

Study of B0 → ρ+ ρ- Decays and implications for the CKM angle φ 2

Journal Article Physical Review D · February 26, 2016 We present a measurement of the branching fraction and the longitudinal polarization fraction of B0→ρ+ρ- decays, as well as the time-dependent CP violating parameters in decays into longitudinally polarized ρ+ρ- pairs with Belle's final data set of 772×106 ... Full text Cite

Measurement of the decay B →dℓνℓ in fully reconstructed events and determination of the Cabibbo-Kobayashi-Maskawa matrix element

Journal Article Physical Review D · February 25, 2016 We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| using the decay B→Dℓνℓ (ℓ=e,μ) based on 711 fb-1 of e+e-→ (4S) data recorded by the Belle detector and containing 772×106 BB¯ pairs. One B meson in the event ... Full text Cite

Probing parton dynamics of QCD matter with Ω and φ production

Journal Article Physical Review C · February 24, 2016 We present measurements of Ω and φ production at midrapidity from Au+Au collisions at nucleon-nucleon center-of-mass energies sNN=7.7, 11.5, 19.6, 27, and 39 GeV by the STAR experiment at the BNL Relativistic Heavy Ion Collider (RHIC). Motivated by the coa ... Full text Cite

Scaling properties of fractional momentum loss of high- pT hadrons in nucleus-nucleus collisions at sNN from 62.4 GeV to 2.76 TeV

Journal Article Physical Review C · February 22, 2016 Measurements of the fractional momentum loss (Sloss≡δpT/pT) of high-transverse-momentum-identified hadrons in heavy-ion collisions are presented. Using π0 in Au+Au and Cu+Cu collisions at sNN=62.4 and 200 GeV measured by the PHENIX experiment at the Relati ... Full text Cite

Search for B0 →π-τ+ντ with hadronic tagging at Belle

Journal Article Physical Review D · February 22, 2016 We search for the process B0→π-τ+ντ using the full Belle data set of 711 fb-1, corresponding to 772×106BB¯ pairs, collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct one B meson in a hadronic ... Full text Cite

Study of π0 pair production in single-tag two-photon collisions

Journal Article Physical Review D · February 18, 2016 We report a measurement of the differential cross section of π0 pair production in single-tag two-photon collisions, γ∗γ→π0π0, in e+e- scattering. The cross section is measured for Q2 up to 30 GeV2, where Q2 is the negative of the invariant mass squared of ... Full text Cite

The RHIC Cold QCD Plan for 2017 to 2023: A Portal to the EIC

Journal Article · February 11, 2016 The exploration of the fundamental structure of strongly interacting matter has always thrived on the complementarity of lepton scattering and purely hadronic probes. As the community eagerly anticipates a future electron ion collider (EIC) in the U.S., an ... Link to item Cite

φ Meson production in the forward/backward rapidity region in Cu + Au collisions at s NN =200 GeV

Journal Article Physical Review C · February 4, 2016 The PHENIX experiment at the Relativistic Heavy Ion Collider has measured φ meson production and its nuclear modification in asymmetric Cu+Au heavy-ion collisions at sNN=200 GeV at both forward Cu-going direction (1.2 Full text Cite

Transverse energy production and charged-particle multiplicity at midrapidity in various systems from sNN =7.7 to 200 GeV

Journal Article Physical Review C · February 3, 2016 Measurements of midrapidity charged-particle multiplicity distributions, dNch/dη, and midrapidity transverse-energy distributions, dET/dη, are presented for a variety of collision systems and energies. Included are distributions for Au+Au collisions at sNN ... Full text Cite

Centrality and Transverse Momentum Dependence of Elliptic Flow of Multistrange Hadrons and ϕ Meson in Au+Au Collisions at √[sNN]=200 GeV.

Journal Article Physical review letters · February 2016 We present high precision measurements of elliptic flow near midrapidity (|y|<1.0) for multistrange hadrons and ϕ meson as a function of centrality and transverse momentum in Au+Au collisions at center of mass energy √[sNN]=200 GeV. We observe that the tr ... Full text Cite

Recent fragmentation function measurements at Belle

Conference Proceedings of XXIII International Workshop on Deep-Inelastic Scattering — PoS(DIS2015) · January 29, 2016 Full text Cite

Measurement of elliptic flow of light nuclei at $\sqrt{s_{NN}}$ = 200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV at RHIC

Journal Article · January 26, 2016 We present measurements of 2$^{nd}$ order azimuthal anisotropy ($v_{2}$) at mid-rapidity $(|y|<1.0)$ for light nuclei d, t, $^{3}$He (for $\sqrt{s_{NN}}$ = 200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV) and anti-nuclei $\bar{\rm d}$ ($\sqrt{s_{NN}}$ = 200, 62 ... Link to item Cite

Measurement of higher cumulants of net-charge multiplicity distributions in Au + Au collisions at sNN =7.7-200 GeV

Journal Article Physical Review C · January 19, 2016 We report the measurement of cumulants (Cn,n=1,⋯,4) of the net-charge distributions measured within pseudorapidity (|η|<0.35) in Au+Au collisions at sNN=7.7-200GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider. The ratios of cumulants ( ... Full text Cite

Centrality dependence of identified particle elliptic flow in relativistic heavy ion collisions at sNN =7.7-62.4 GeV

Journal Article Physical Review C · January 19, 2016 Elliptic flow (v2) values for identified particles at midrapidity in Au + Au collisions measured by the STAR experiment in the Beam Energy Scan at the Relativistic Heavy Ion Collider at sNN=7.7-62.4 GeV are presented for three centrality classes. The centr ... Full text Cite

Dielectron production in Au + Au collisions at sNN =200 GeV

Journal Article Physical Review C · January 11, 2016 We present measurements of e+e- production at midrapidity in Au+Au collisions at sNN=200 GeV. The invariant yield is studied within the PHENIX detector acceptance over a wide range of mass (mee<5 GeV/c2) and pair transverse momentum (pT<5 GeV/c) for minimu ... Full text Cite

Di-hadron correlations with identified leading hadrons in 200 GeV Au+Au and d+Au collisions at STAR

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · December 17, 2015 The STAR Collaboration presents for the first time two-dimensional di-hadron correlations with identified leading hadrons in 200 GeV central Au. +. Au and minimum-bias d. +. Au collisions to explore hadronization mechanisms in the quark gluon plasma. The e ... Full text Cite

Observation of Transverse Spin-Dependent Azimuthal Correlations of Charged Pion Pairs in p^{↑}+p at sqrt[s]=200 GeV.

Journal Article Physical review letters · December 2015 We report the observation of transverse polarization-dependent azimuthal correlations in charged pion pair production with the STAR experiment in p^{↑}+p collisions at RHIC. These correlations directly probe quark transversity distributions. We measure sig ... Full text Cite

Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e+e- at s =10.58 GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · November 20, 2015 We report the first double differential cross sections of two charged pions and kaons (e+e-→hhX) in electron-positron annihilation as a function of the fractional energies of the two hadrons for any charge and hadron combination. The dependence of these di ... Full text Cite

Energy dependence of acceptance-corrected dielectron excess mass spectrum at mid-rapidity in Au+Au collisions at √sNN=19.6 and 200 GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · November 12, 2015 The acceptance-corrected dielectron excess mass spectra, where the known hadronic sources have been subtracted from the inclusive dielectron mass spectra, are reported for the first time at mid-rapidity |yee|<1 in minimum-bias Au+Au collisions at √sNN=19.6 ... Full text Cite

Measurement of interaction between antiprotons.

Journal Article Nature · November 2015 One of the primary goals of nuclear physics is to understand the force between nucleons, which is a necessary step for understanding the structure of nuclei and how nuclei interact with each other. Rutherford discovered the atomic nucleus in 1911, and the ... Full text Cite

Azimuthal Anisotropy in U+U and Au+Au Collisions at RHIC.

Journal Article Physical review letters · November 2015 Collisions between prolate uranium nuclei are used to study how particle production and azimuthal anisotropies depend on initial geometry in heavy-ion collisions. We report the two- and four-particle cumulants, v_{2}{2} and v_{2}{4}, for charged hadrons fr ... Full text Cite

Observation of B^{0}→pΛ[over ¯]D^{(*)-}.

Journal Article Physical review letters · November 2015 We report the first observation of the decays B^{0}→pΛ[over ¯]D^{(*)-}. The data sample of 711 fb^{-1} used in this analysis corresponds to 772×10^{6} BB[over ¯] pairs, collected at the ϒ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e ... Full text Cite

Semi-inclusive studies of semileptonic Bs decays at Belle

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · October 22, 2015 We present an analysis of the semi-inclusive decays Bs→Ds-Xℓ+ν and Bs→Ds∗-Xℓ+ν, where X denotes a final state that may consist of additional hadrons or photons and ℓ is an electron or muon. The studied Bs decays are contained in the 121.4fb-1 Υ(5S) data sa ... Full text Cite

Measurements of Elliptic and Triangular Flow in High-Multiplicity 3He+Au Collisions at √(s(NN))=200 GeV.

Journal Article Physical review letters · October 2015 We present the first measurement of elliptic (v(2)) and triangular (v(3)) flow in high-multiplicity (3)He+Au collisions at √(s(NN))=200 GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, are compared in (3)He+Au ... Full text Cite

First Observation of the Hadronic Transition ϒ(4S)→ηh(b)(1P) and New Measurement of the h(b)(1P) and η(b)(1S) Parameters.

Journal Article Physical review letters · October 2015 Using a sample of 771.6×10(6) ϒϒ(4S) decays collected by the Belle experiment at the KEKB e(+)e(-) collider, we observe, for the first time, the transition ϒ(4S)→ηh(b)(1P) with the branching fraction B[ϒ(4S)→ηh(b)(1P)]=(2.18±0.11±0.18)×10(-3) and we measur ... Full text Cite

Measurement of the branching fraction of B+ →τ+ντ decays with the semileptonic tagging method

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · September 17, 2015 We report a measurement of the branching fraction of B+→τ+ντ decays using a data sample of 772×106BB¯ pairs, collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct the accompanying B meson in a s ... Full text Cite

Erratum: Publisher's Note: Measurements of B → D ¯ Ds0∗+ (2317) decay rates and a search for isospin partners of the Ds0∗+ (2317) (Physical Review D - Particles, Fields, Gravitation and Cosmology (2015) 91 (092011))

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · August 31, 2015 Full text Cite

Measurements of dielectron production in Au + Au collisions at sNN =200 GeV from the STAR experiment

Journal Article Physical Review C Nuclear Physics · August 24, 2015 We report on measurements of dielectron (e+e-) production in Au+Au collisions at a center-of-mass energy of 200 GeV per nucleon-nucleon pair using the STAR detector at BNL Relativistic Heavy Ion Collider. Systematic measurements of the dielectron yield as ... Full text Cite

Energy dependence of Kπ, pπ, and Kp fluctuations in Au + Au collisions from sNN =7.7 to 200 GeV ENERGY DEPENDENCE of Kπ, pπ, and Kp ... L. ADAMCZYK et al.

Journal Article Physical Review C Nuclear Physics · August 7, 2015 A search for the quantum chromodynamics (QCD) critical point was performed by the STAR experiment at the BNL Relativistic Heavy Ion Collider, using dynamical fluctuations of unlike particle pairs. Heavy ion collisions were studied over a large range of col ... Full text Cite

Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at sqrt[s]=200 GeV.

Journal Article Physical review letters · August 2015 We report a new measurement of the midrapidity inclusive jet longitudinal double-spin asymmetry, A_{LL}, in polarized pp collisions at center-of-mass energy sqrt[s]=200 GeV. The STAR data place stringent constraints on polarized parton distribution functi ... Full text Cite

Measurement of e+e- →γχcJ via initial state radiation at Belle

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · July 20, 2015 The process e+e-→γχcJ (J=1, 2) is studied via initial state radiation using 980fb-1 of data at and around the (nS) (n=1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No significant signal is observed ... Full text Cite

Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector

Journal Article Physical Review C Nuclear Physics · July 10, 2015 We present results of analyses of two-pion interferometry in Au+Au collisions at sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV measured in the STAR detector as part of the BNL Relativistic Heavy Ion Collider Beam Energy Scan program. The extracted correla ... Full text Cite

Evidence for the decay B0 →ηπ0

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · July 9, 2015 We report a search for the charmless hadronic decay B0→ηπ0 with a data sample corresponding to an integrated luminosity of 694 fb-1 containing 753×106 BB¯ pairs. The data were collected by the Belle experiment running on the Y(4S) resonance at the KEKB e+e ... Full text Cite

Long-range pseudorapidity dihadron correlations in d + Au collisions at √sNN = 200 GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · July 1, 2015 Dihadron angular correlations in d + Au collisions at √sNN = 200 GeV are reported as a function of the measured zero-degree calorimeter neutral energy and the forward charged hadron multiplicity in the Au-beam direction. A finite correlated yield is observ ... Full text Cite

Search for B+ →a+νaγ decays with hadronic tagging using the full Belle data sample

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · June 17, 2015 We search for the decay B+→+νγ with +=e+ or μ+ using the full Belle data set of 772×106BB¯ pairs, collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct one B meson in a hadronic decay mode and ... Full text Cite

Centrality dependence of low-momentum direct-photon production in Au+Au collisions at s NN =200 GeV CENTRALITY DEPENDENCE of LOW-MOMENTUM DIRECT- ... A. ADARE et al.

Journal Article Physical Review C Nuclear Physics · June 5, 2015 The PHENIX experiment at RHIC has measured the centrality dependence of the direct photon yield from Au+Au collisions at sNN=200 GeV down to pT=0.4 GeV/c. Photons are detected via photon conversions to e+e- pairs and an improved technique is applied that m ... Full text Cite

Observation of Charge Asymmetry Dependence of Pion Elliptic Flow and the Possible Chiral Magnetic Wave in Heavy-Ion Collisions.

Journal Article Physical review letters · June 2015 We present measurements of π(-) and π(+) elliptic flow, v(2), at midrapidity in Au+Au collisions at √[s(NN)]=200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV, as a function of event-by-event charge asymmetry, A(ch), based on data from the STAR experiment at RHIC ... Full text Cite

Measurement of Azimuthal Modulations in the Cross-Section of Di-Pion Pairs in Di-Jet Production from Electron-Positron Annihilation

Journal Article · May 29, 2015 We present an extraction of azimuthal correlations between two pairs of charged pions detected in opposite jets from electron-positron annihilation. These correlations may arise from the dependence of the di-pion fragmentation on the polarization of the pa ... Link to item Cite

Measurements of B → D ¯ Ds0∗+ (2317) decay rates and a search for isospin partners of the Ds0∗+ (2317)

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · May 28, 2015 We report improved measurements of the product branching fractions B(B+→D¯0Ds0∗+(2317))×B(Ds0∗+(2317)→Ds+π0)=(8.0-1.2+1.3±1.1±0.4)×10-4 and B(B0→D-Ds0∗+(2317))×B(Ds0∗+(2317)→Ds+π0)=(10.2-1.2+1.3±1.0±0.4)×10-4, where the first errors are statistical, the se ... Full text Cite

Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in sNN=200GeV Au+Au collisions

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · May 8, 2015 A data-driven method was applied to Au+Au collisions at sNN=200GeV made with the STAR detector at RHIC to isolate pseudorapidity distance δη-dependent and δη-independent correlations by using two- and four-particle azimuthal cumulant measurements. We ident ... Full text Cite

Measurement of Long-Range Angular Correlation and Quadrupole Anisotropy of Pions and (Anti)Protons in Central d+Au Collisions at sqrt[s_{NN}]=200 GeV.

Journal Article Physical review letters · May 2015 We present azimuthal angular correlations between charged hadrons and energy deposited in calorimeter towers in central d+Au and minimum bias p+p collisions at sqrt[s_{NN}]=200 GeV. The charged hadron is measured at midrapidity |η|<0.35, and the energy is ... Full text Cite

Heavy-quark production and elliptic flow in Au + Au collisions at sNN =62.4 GeV

Journal Article Physical Review C Nuclear Physics · April 28, 2015 We present measurements of electrons and positrons from the semileptonic decays of heavy-flavor hadrons at midrapidity (|y|< 0.35) in Au+Au collisions at sNN=62.4 GeV. The data were collected in 2010 by the PHENIX experiment that included the new hadron-bl ... Full text Cite

Effect of event selection on jetlike correlation measurement in d + Au collisions at √sNN = 200 GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · April 9, 2015 Dihadron correlations are analyzed in √sNN = 200 GeV d + Au collisions classified by forward charged particle multiplicity and zero-degree neutral energy in the Au-beam direction. It is found that the jetlike correlated yield increases with the event multi ... Full text Cite

Charged-to-neutral correlation at forward rapidity in Au + Au collisions at sNN =200 GeV

Journal Article Physical Review C Nuclear Physics · March 20, 2015 Event-by-event fluctuations of the multiplicities of inclusive charged particles and photons at forward rapidity in Au+Au collisions at sNN=200 GeV have been studied. The dominant contribution to such fluctuations is expected to come from correlated produc ... Full text Cite

The $φ(1020)\rightarrow e^{+}e^{-}$ meson decay measured with the STAR experiment in Au+Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV

Journal Article · March 13, 2015 We report the measurement of the leptonic ($e^{+}e^{-}$) decay channel of the $\phi$(1020) meson in Au+Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV by the STAR experiment. The transverse momentum ($p_{\rm T}$) spectrum is measured for 0.1 $\le p_{\rm T} \ ... Link to item Cite

Search for dark photons from neutral meson decays in p+p and d+ Au collisions at sNN =200 GeV

Journal Article Physical Review C Nuclear Physics · March 10, 2015 The standard model (SM) of particle physics is spectacularly successful, yet the measured value of the muon anomalous magnetic moment (g-2)μ deviates from SM calculations by 3.6σ. Several theoretical models attribute this to the existence of a "dark photon ... Full text Cite

Measurement of the B ¯ →xsγ branching fraction with a sum of exclusive decays MEASUREMENT of THE. T. SAITO et al.

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · March 4, 2015 We use 772×106 BB¯ meson pairs collected at the ?(4S) resonance with the Belle detector to measure the branching fraction for B¯→Xsγ. Our measurement uses a sum-of-exclusives approach in which 38 of the hadronic final states with strangeness equal to +1, d ... Full text Cite

Measurement of B0 → D- s K0 S π+ and B+ → D- sK+K+ branching fractions

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · February 26, 2015 We report a measurement of the B0 and B+ meson decays to the D-sK0Sπ+ and D-sK+K+ final states, respectively, using 657 × 106 Full text Cite

Measurement of the amplitude ratio of $B^0 \to D^0K^{0}$ and $B^0 \to \bar{D^0}K^{0}$ decays with a model-independent Dalitz plot analysis using $D\to K_S^0π^+π^-$ decays

Journal Article · February 26, 2015 We report a measurement of the amplitude ratio $r_S$ of $B^0 \to D^0K^{*0}$ and $B^0 \to \bar{D^0}K^{*0}$ decays with a model-independent Dalitz plot analysis using $D\to K_S^0\pi^+\pi^-$ decays. Using the full data sample of $772\times10^6$ $B\bar{B}$ pai ... Link to item Cite

Measurement of Υ(1S + 2S + 3S) production in p + p and Au+Au collisions at s NN = 200 GeV measurement of Υ(1S+2S+3S) production ... A. Adare et al.

Journal Article Physical Review C Nuclear Physics · February 24, 2015 Measurements of bottomonium production in heavy-ion and p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are presented. The inclusive yield of the three Υ states, Υ(1S+2S+3S), was measured in the PHENIX experiment via electron-positron decay pa ... Full text Cite

Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · January 8, 2015 We search for the decay Bs0→γγ and measure the branching fraction for Bs0→φγ using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The Bs0→φγ branching fraction is measured to be (3.6± ... Full text Cite

The RHIC SPIN Program: Achievements and Future Opportunities

Journal Article · January 6, 2015 Time and again, spin has been a key element in the exploration of fundamental physics. Spin-dependent observables have often revealed deficits in the assumed theoretical framework and have led to novel developments and concepts. Spin is exploited in many p ... Link to item Cite

ΛΛ Correlation function in Au+Au collisions at √[S(NN)]=200 GeV.

Journal Article Physical review letters · January 2015 We present ΛΛ correlation measurements in heavy-ion collisions for Au+Au collisions at sqrt[s_{NN}]=200 GeV using the STAR experiment at the Relativistic Heavy-Ion Collider. The Lednický-Lyuboshitz analytical model has been used to fit the data to obtain ... Full text Cite

Corrigendum to "Suppression of Υ production in d + Au and Au + Au collisions at √sNN = 200 GeV" [Phys. Lett. B 735 (2014) 127-137]

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · January 1, 2015 Full text Cite

Recent results on light quark fragmentation from belle

Conference Proceedings of Science · January 1, 2015 This contribution reviews recent results on fragmentation function related measurements from Belle data. It concentrates on the most recent result of the measurement of azimuthal modulations in the cross-section of di-pion pairs in di-jet production from e ... Cite

Charged-Pion cross sections and double-helicity asymmetries in polarized p+p collisions at √s = 200 GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · January 1, 2015 We present midrapidity charged-pion invariant cross sections, the ratio of the π- to π+ cross sections and the charge-separated double-spin asymmetries in polarized p + p collisions at p√s = 200 GeV. While the cross section measuremen ... Full text Cite

Transverse single spin and azimuthal asymmetries in hadronic collisions at star

Conference EPJ Web of Conferences · January 1, 2015 Hadronic collisions with transversely polarized protons are an important part of the quest to understand the transverse spin structure of the proton. Experiments at RHIC collected large datasets at center of mass energies of 200 GeV and 500 GeV, accessing ... Full text Cite

Recent Results on the Measurement of Fragmentation Functions in e⁺e^- Annihilation

Journal Article International Journal of Modern Physics: Conference Series · January 2015 The precise knowledge of fragmentation functions is needed to extract information about nucleon structure from semi-inclusive measurements. They themselves are also important objects to study the properties of nonperturbative QCD. This contributio ... Full text Cite

Evidence of (1S) →j /ψ+χc1 and search for double-charmonium production in (1S) and (2S) decays

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · December 16, 2014 Using data samples of 102×106 (1S) and 158×106 (2S) events collected with the Belle detector, a first experimental search has been made for double-charmonium production in the exclusive decays (1S,2S)→J/ψ(ψ′)+X, where X=ηc, χcJ(J=0,1,2), ηc(2S), X(3940), a ... Full text Cite

Dielectron azimuthal anisotropy at mid-rapidity in Au+Au collisions at sNN =200 GeV

Journal Article Physical Review C Nuclear Physics · December 9, 2014 We report on the first measurement of the azimuthal anisotropy (v2) of dielectrons (e+e- pairs) at mid-rapidity from sNN=200 GeV Au+Au collisions with the STAR detector at the Relativistic Heavy Ion Collider (RHIC), presented as a function of transverse mo ... Full text Cite

J/ψ polarization in p+p collisions at s=200 GeV in STAR

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · December 2, 2014 We report on a polarization measurement of inclusive J/ψ mesons in the di-electron decay channel at mid-rapidity at 2 < pT < 6 GeV/c in p + p collisions at √s = 200 GeV. Data were taken with the STAR detector at RHIC. The J/ψ polarization measurement shoul ... Full text Cite

STAR Collaboration

Journal Article Nuclear Physics A · December 1, 2014 Full text Cite

PHENIX Collaboration

Journal Article Nuclear Physics A · December 1, 2014 Full text Cite

The Physics of the B Factories

Journal Article European Physical Journal C · November 15, 2014 Full text Cite

STAR Collaboration

Journal Article Nuclear Physics A · November 1, 2014 Full text Cite

Beam-energy and system-size dependence of the space-time extent of the pion emission source produced in heavy ion collisions

Journal Article · October 9, 2014 Two-pion interferometry measurements are used to extract the Gaussian radii $R_{{\rm out}}$, $R_{{\rm side}}$, and $R_{{\rm long}}$, of the pion emission sources produced in Cu$+$Cu and Au$+$Au collisions at several beam collision energies $\sqrt{s_{_{NN}} ... Link to item Cite

Observation of D0 meson nuclear modifications in Au+Au collisions at sqrt[s(NN)] = 200 GeV.

Journal Article Physical review letters · October 2014 We report the first measurement of charmed-hadron (D(0)) production via the hadronic decay channel (D(0) → K(-) + π(+)) in Au+Au collisions at sqrt[s(NN)] = 200 GeV with the STAR experiment. The charm production cross section per nucleon-nucleon collision ... Full text Cite

Measurement of time-dependent CP violation in B0 → η′K0 decays

Journal Article Journal of High Energy Physics · October 1, 2014 Abstract: We present a measurement of the time-dependent CP violation parameters in B0 → η′K0 decays. The measurement is based on the full data sample containing 772 × 106 (Formula Presented.) pairs collected at the Υ(4S) r ... Full text Cite

Low-mass vector-meson production at forward rapidity in p+p collisions at s =200GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · September 8, 2014 The PHENIX experiment at the Relativistic Heavy Ion Collider has measured low-mass vector-meson, ω, ρ, and φ, production through the dimuon decay channel at forward rapidity (1.2<|y|<2.2) in p+p collisions at s=200GeV. The differential cross sections for t ... Full text Cite

Inclusive cross sections, charge ratio and double-helicity asymmetries for $π^+$ and $π^-$ production in $p$$+$$p$ collisions at $\sqrt{s}$=200 GeV

Journal Article · September 5, 2014 We present the midrapidity charged pion invariant cross sections and the ratio of $\pi^-$-to-$\pi^+$ production ($5 Link to item Cite

J/ψ production at low pT in Au+Au and Cu+Cu collisions at sNN =200 GeV with the STAR detector

Journal Article Physical Review C Nuclear Physics · August 12, 2014 The J/ψ pT spectrum and nuclear modification factor (RAA) are reported for pT<5GeV/c and |y|<1 from 0% to 60% central Au+Au and Cu+Cu collisions at sNN=200GeV at STAR. A significant suppression of pT-integrated J/ψ production is observed in central Au+Au e ... Full text Cite

Measurement of longitudinal spin asymmetries for weak boson production in polarized proton-proton collisions at RHIC.

Journal Article Physical review letters · August 2014 We report measurements of single- and double-spin asymmetries for W^{±} and Z/γ^{*} boson production in longitudinally polarized p+p collisions at sqrt[s]=510 GeV by the STAR experiment at RHIC. The asymmetries for W^{±} were measured as a function of the ... Full text Cite

Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC.

Journal Article Physical review letters · August 2014 We report the first measurements of the moments--mean (M), variance (σ(2)), skewness (S), and kurtosis (κ)--of the net-charge multiplicity distributions at midrapidity in Au+Au collisions at seven energies, ranging from sqrt[sNN]=7.7 to 200 GeV, as a part ... Full text Cite

Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC.

Journal Article Physical review letters · August 2014 Local parity-odd domains are theorized to form inside a quark-gluon plasma which has been produced in high-energy heavy-ion collisions. The local parity-odd domains manifest themselves as charge separation along the magnetic field axis via the chiral magne ... Full text Cite

Suppression of Υ{hooked} production in d + Au and Au + Au collisions at sNN=200GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · July 30, 2014 We report measurements of Υ{hooked} meson production in p + p, d + Au, and Au + Au collisions using the STAR detector at RHIC. We compare the Υ{hooked} yield to the measured cross section in p + p collisions in order to quantify any modifications of the yi ... Full text Cite

Measurement of transverse-single-spin asymmetries for midrapidity and forward-rapidity production of hadrons in polarized p+p collisions at s =200 and 62.4 GeV measurement of transverse-single-spin ... A. ADARE et al.

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · July 17, 2014 Measurements of transverse-single-spin asymmetries (AN) in p+p collisions at s=62.4 and 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider are presented. At midrapidity, AN is measured for neutral pion and eta mesons reconstructed from ... Full text Cite

Inclusive double-helicity asymmetries in neutral-pion and eta-meson production in p → + p → collisions at s =200GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · July 17, 2014 Results are presented from data recorded in 2009 by the PHENIX experiment at the Relativistic Heavy Ion Collider for the double-longitudinal spin asymmetry, ALL, for π0 and η production in s=200GeV polarized p+p collisions. Comparison of the π0 results wit ... Full text Cite

Dielectron mass spectra from Au+Au collisions at √[s(NN)]=200 GeV.

Journal Article Physical review letters · July 2014 We report the STAR measurements of dielectron (e(+)e(-)) production at midrapidity (|y(ee)|<1) in Au+Au collisions at √[s(NN)]=200 GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30-0.76 (ρ-like), 0.76-0.80 (ω-lik ... Full text Cite

Cold-nuclear-matter effects on heavy-quark production at forward and backward rapidity in d + Au collisions at √sNN = 200 GeV.

Journal Article Physical review letters · June 2014 The PHENIX experiment has measured open heavy-flavor production via semileptonic decay over the transverse momentum range 1 < p(T) < 6 GeV/c at forward and backward rapidity (1.4 < |y| < 2.0) in d+Au and p + p collisions at √sNN = 200 GeV. In central d+A ... Full text Cite

Measurement of charge multiplicity asymmetry correlations in high-energy nucleus-nucleus collisions at sNN =200 GeV

Journal Article Physical Review C Nuclear Physics · April 23, 2014 A study is reported of the same- and opposite-sign charge-dependent azimuthal correlations with respect to the event plane in Au+Au collisions at sNN=200 GeV. The charge multiplicity asymmetries between the up/down and left/right hemispheres relative to th ... Full text Cite

Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state

Journal Article Progress of Theoretical and Experimental Physics · April 16, 2014 We report an observation of the B±→ J/ψηK± and B0 → J/ψηK0S decays using 772 × 106BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- Full text Cite

Beam-energy dependence of the directed flow of protons, antiprotons, and pions in Au+Au collisions.

Journal Article Physical review letters · April 2014 Rapidity-odd directed flow (v1) measurements for charged pions, protons, and antiprotons near midrapidity (y=0) are reported in sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion C ... Full text Cite

Search for B0 →p Λ ̄ π-γ at Belle SEARCH for ⋯ Y.-T. LAI et al.

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · March 6, 2014 We search for the charmless B0 decay with final state particles pΛ̄π-γ using the full data sample that contains 772×106BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. This decay is predicted to ... Full text Cite

Jet-hadron correlations in √[s(NN)]=200 GeV p+p and central Au+Au collisions.

Journal Article Physical review letters · March 2014 Azimuthal angular correlations of charged hadrons with respect to the axis of a reconstructed (trigger) jet in Au+Au and p+p collisions at √[s(NN)]=200 GeV in STAR are presented. The trigger jet population in Au+Au collisions is biased toward jets that ha ... Full text Cite

Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at s = 200 GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · January 15, 2014 The differential cross section and spin asymmetries for neutral pions produced within the intermediate pseudorapidity range 0.8<η<2.0 in polarized proton-proton collisions at s=200 GeV are presented. Neutral pions were detected using the end cap electromag ... Full text Cite

Measurement of the branching fraction of B+ → τ+ντ decays with the semileptonic tagging method and the full Belle data sample

Journal Article 8th International Workshop on the Ckm Unitarity Triangle Ckm 2014 · January 1, 2014 We report a measurement of the branching fraction of B+ → τ+ντ decays using a data sample of 772 × 106BB pairs, collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− Cite

Energy dependence of moments of net-proton multiplicity distributions at RHIC.

Journal Article Physical review letters · January 2014 We report the beam energy (sqrt[sNN]=7.7-200 GeV) and collision centrality dependence of the mean (M), standard deviation (σ), skewness (S), and kurtosis (κ) of the net-proton multiplicity distributions in Au+Au collisions. The measurements are carried ou ... Full text Cite

Fluctuations of charge separation perpendicular to the event plane and local parity violation in s NN = 200 GeV Au + Au collisions at the BNL Relativistic Heavy Ion Collider

Journal Article Physical Review C Nuclear Physics · December 26, 2013 Previous experimental results based on data (∼15×106 events) collected by the STAR detector at the BNL Relativistic Heavy Ion Collider suggest event-by-event charge-separation fluctuations perpendicular to the event plane in noncentral heavy-ion collisions ... Full text Cite

Measuring transversity in polarized p+p collisions at s =200 GeV

Conference Aip Conference Proceedings · December 16, 2013 This contribution describes the first direct measurements of the quark transversity distribution in polarized p+p collisions at s=200 GeV by the STAR experiment. These data, taken in 2006 during RHIC run 6, represent a sample of 2.4 pb-1 with an ... Full text Cite

Measurement of theviolation parameters indecays

Journal Article Physical Review D · November 19, 2013 Full text Cite

Measurement of e+e-→ωπ0, K (892)K̄ and K2(1430)K̄ at √s near 10.6 GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · September 27, 2013 Using data samples of 89 fb-1, 703 fb-1, and 121 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at center-of-mass energies 10.52 GeV, 10.58 GeV, and 10.876 GeV, resp ... Full text Cite

Freeze-out dynamics via charged kaon femtoscopy in √s NN=200 GeV central Au + Au collisions

Journal Article Physical Review C Nuclear Physics · September 19, 2013 We present measurements of three-dimensional correlation functions of like-sign, low-transverse-momentum kaon pairs from √sNN=200 GeV Au+Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon s ... Full text Cite

Measurement of J/ψ azimuthal anisotropy in Au+Au collisions at sqrt[s(NN)]=200 GeV.

Journal Article Physical review letters · August 2013 The measurement of J/ψ azimuthal anisotropy is presented as a function of transverse momentum for different centralities in Au+Au collisions at sqrt[s(NN)]=200 GeV. The measured J/ψ elliptic flow is consistent with zero within errors for transverse momentu ... Full text Cite

Precision measurement of charged pion and kaon differential cross sections in e+ e- annihilation at sqrt[s]=10.52 GeV.

Journal Article Physical review letters · August 2013 Measurements of inclusive differential cross sections for charged pion and kaon production in e+ e- annihilation have been carried out at a center-of-mass energy of sqrt[s]=10.52 GeV. The measurements were performed with the Belle detector at the KEKB e+ ... Full text Cite

Third harmonic flow of charged particles in Au + Au collisions at √sNN=200 GeV

Journal Article Physical Review C Nuclear Physics · July 15, 2013 We report measurements of the third harmonic coefficient of the azimuthal anisotropy, v3, known as triangular flow. The analysis is for charged particles in Au+Au collisions at √sNN=200 GeV, based on data from the STAR experiment at t ... Full text Cite

Elliptic flow of identified hadrons in Au+Au collisions at √s NN=7.7-62.4 GeV

Journal Article Physical Review C Nuclear Physics · July 3, 2013 Measurements of the elliptic flow, v2, of identified hadrons (π±, K±, Ks0, p, p̄, φ, Λ, Λ̄, Ξ-, Ξ̄+, Ω-, Ω̄+) in Au+Au collisions at √sNN=7.7, 11.5, 19.6, 27, 39, and 62.4 ... Full text Cite

Medium modification of jet fragmentation in Au+Au collisions at √[s(NN)]=200 GeV measured in direct photon-hadron correlations.

Journal Article Physical review letters · July 2013 The jet fragmentation function is measured with direct photon-hadron correlations in p+p and Au+Au collisions at √[s(NN)]=200 GeV. The p(T) of the photon is an excellent approximation to the initial p(T) of the jet and the ratio z(T)=p(T)(h)/p(T)(γ) is use ... Full text Cite

System-size dependence of transverse momentum correlations at √s NN=62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider

Journal Article Physical Review C Nuclear Physics · June 17, 2013 We present a study of the average transverse momentum (pt) fluctuations and pt correlations for charged particles produced in Cu+Cu collisions at midrapidity for √sNN= 62.4 and 200 GeV. These results are compared with those ... Full text Cite

J/ψ production at high transverse momenta in p+p and Au + Au collisions at sNN=200GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · May 13, 2013 We report J/ψ spectra for transverse momenta pT>5GeV/c at mid-rapidity in p+p and Au+Au collisions at sNN=200GeV. The inclusive J/ψ spectrum and the extracted B-hadron feed-down are compared to models incorporating different production mechanism ... Full text Cite

Search for an H-dibaryon with a mass near 2mΛ in Υ(1S) and Υ(2S) decays.

Journal Article Physical review letters · May 2013 We report the results of a high-statistics search for H dibaryon production in inclusive Υ(1S) and Υ(2S) decays. No indication of an H dibaryon with a mass near the M(H)=2m(Λ) threshold is seen in either the H→Λpπ(-) or ΛΛ decay channels and 90% confidence ... Full text Cite

Υ(1S+2S+3S) production in d+Au and p+p collisions at √s NN=200 GeV and cold-nuclear-matter effects

Journal Article Physical Review C Nuclear Physics · April 25, 2013 The three Υ states, Υ(1S+2S+3S), are measured in d+Au and p+p collisions at √sNN=200 GeV and rapidities 1.2<|y|<2.2 by the PHENIX experiment at the Relativistic Heavy Ion Collider. Cross sections for the inclusive Υ(1S+2S+3S) producti ... Full text Cite

Experimental studies of di-jets in Au + Au collisions using angular correlations with respect to back-to-back leading hadrons

Journal Article Physical Review C Nuclear Physics · April 8, 2013 Jet-medium interactions are studied via a multihadron correlation technique (called "2+1"), where a pair of back-to-back hadron triggers with large transverse momentum is used as a proxy for a di-jet. This work extends the previous analysis for nearly symm ... Full text Cite

Observation of an energy-dependent difference in elliptic flow between particles and antiparticles in relativistic heavy ion collisions.

Journal Article Physical review letters · April 2013 Elliptic flow (v(2)) values for identified particles at midrapidity in Au + Au collisions, measured by the STAR experiment in the beam energy scan at RHIC at sqrt[s(NN)] = 7.7-62.4 GeV, are presented. A beam-energy-dependent difference of the values of v(2 ... Full text Cite

The RHIC Spin Program: Achievements and Future Opportunities

Journal Article · March 30, 2013 This document summarizes recent achievements of the RHIC spin program and their impact on our understanding of the nucleon's spin structure, i.e. the individual parton (quark and gluon) contributions to the helicity structure of the nucleon and to understa ... Link to item Cite

Evidence forwith a Hadronic Tagging Method Using the Full Data Sample of Belle

Journal Article Physical Review Letters · March 25, 2013 Full text Cite

Fluctuations of charge separation perpendicular to the event plane and local parity violation in sqrt(sNN)=200 GeV Au+Au collisions at RHIC

Journal Article · February 15, 2013 Previous experimental results based on data (15 million events) collected by the STAR detector at RHIC suggest event-by-event charge separation fluctuations perpendicular to the event plane in non-central heavy-ion collisions. Here we present the correlato ... Link to item Cite

Single spin asymmetry AN in polarized proton-proton elastic scattering at s=200GeV

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · February 12, 2013 We report a high precision measurement of the transverse single spin asymmetry AN at the center of mass energy s=200GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The AN was measured in the four-momentum trans ... Full text Cite

Double-spin asymmetry of electrons from heavy-flavor decays in p+p collisions at √s=200 GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · January 29, 2013 We report on the first measurement of the double-spin asymmetry, A LL, of electrons from the decays of hadrons containing heavy flavor in longitudinally polarized p+p collisions at √s=200 GeV for p T=0.5 to 3.0 GeV/c. The asymmetry wa ... Full text Cite

Spin dependent fragmentation functions at belle

Journal Article Nuovo Cimento Della Societa Italiana Di Fisica C · January 1, 2013 The Belle detector at the KEKB e+e - collider provides large amounts of statistics to study the fragmentation of light quarks into final state hadrons. In addition to unpolarized fragmentation functions also spin dependent fragmentati ... Full text Cite

J/ψ suppression at forward rapidity in Au + Au collisions at √sNN=39 and 62.4 GeV

Journal Article Physical Review C Nuclear Physics · December 6, 2012 We present measurements of the J/ψ invariant yields in √s NN=39 and 62.4 GeV Au + Au collisions at forward rapidity (1.2<|y|<2.2). Invariant yields are presented as a function of both collision centrality and transverse momentum. Nuclear modific ... Full text Cite

Inclusive charged hadron elliptic flow in Au + Au collisions at √sNN=7.7-39 GeV

Journal Article Physical Review C Nuclear Physics · November 15, 2012 A systematic study is presented for centrality, transverse momentum (p T), and pseudorapidity (η) dependence of the inclusive charged hadron elliptic flow (v2) at midrapidity (|η|<1.0) in Au+Au collisions at √sNN=7.7, 11.5, ... Full text Cite

Measurements of D0 and D * production in p+p collisions at √s=200GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · October 31, 2012 We report measurements of charmed-hadron (D0,D *) production cross sections at midrapidity in p+p collisions at a center-of-mass energy of 200 GeV by the STAR experiment. Charmed hadrons were reconstructed via the hadronic decays D0→K - Full text Cite

Evolution of π(0) suppression in Au+Au collisions from √(s(NN))=39 to 200 GeV.

Journal Article Physical review letters · October 2012 Neutral-pion π(0) spectra were measured at midrapidity (|y|<0.35) in Au+Au collisions at √(s(NN))=39 and 62.4 GeV and compared with earlier measurements at 200 GeV in a transverse-momentum range of 1 Full text Cite

Study of Three-Body Y(10860) Decays

Journal Article · September 28, 2012 We report preliminary results on the analysis of the three-body Y(10860)=> B barB pi, Y(10860) => (B barB* + c.c.) pi and Y(10860)=> B* barB* pi decays including an observation of the Y(10860)=> Zb(10610)+- pi-+ => [B barB*+c.c]+- pi-+ and Y(10860)=> Zb(10 ... Link to item Cite

Transverse single-spin asymmetry and cross section for π0 and η mesons at large Feynman x in p →+p collisions at √s=200GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · September 5, 2012 Measurements of the differential cross section and the transverse single-spin asymmetry, A N, vs x F for π0 and η mesons are reported for 0.4F<0.75 at an average pseudorapidity of 3.68. A data sample of approximately 6.3 ... Full text Cite

Longitudinal and transverse spin asymmetries for inclusive jet production at mid-rapidity in polarized p+p collisions at √s=200GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · August 9, 2012 We report STAR measurements of the longitudinal double-spin asymmetry A LL, the transverse single-spin asymmetry A N, and the transverse double-spin asymmetries A Σ and A TT for inclusive jet production at mid-ra ... Full text Cite

Di-electron spectrum at mid-rapidity in p+p collisions at √s=200 GeV

Journal Article Physical Review C Nuclear Physics · August 8, 2012 We report on the mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via e+e- decays, from √s=200 GeV p+p collisions, measured by the large-acceptance experiment STAR at the Relativistic Hea ... Full text Cite

Evidence for a Zb0(10610) in Dalitz analysis of Y(5S) -> Y(nS) pi0 pi0

Journal Article · July 18, 2012 We report the first observation of Y(5S) -> Y(1,2S) pi0 pi0 decays. Evidence for the Zb0(10610) with 4.9sigma significance is found in a Dalitz plot analysis of Y(5S) -> Y(2S) pi0 pi0 decays. The results are obtained with a 121.4 fb^-1 data sample collecte ... Link to item Cite

Energy and system-size dependence of two- and four-particle v2 measurements in heavy-ion collisions at √sNN=62.4 and 200 GeV and their implications on flow fluctuations and nonflow

Journal Article Physical Review C Nuclear Physics · July 11, 2012 We present STAR measurements of azimuthal anisotropy by means of the two- and four-particle cumulants v2 (v2{2} and v 2{4}) for Au+Au and Cu+Cu collisions at center-of-mass energies √sNN=62.4 and 200 GeV. The dif ... Full text Cite

Transverse spin effects in hadron-pair production from semi-inclusive deep inelastic scattering

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · June 18, 2012 First measurements of azimuthal asymmetries in hadron-pair production in deep-inelastic scattering of muons on transversely polarised 6LiD (deuteron) and NH3 (proton) targets are presented. The data were taken in the years 2002-2004 a ... Full text Cite

Measurement of the W→eν and Z/γ *→e +e - production cross sections at mid-rapidity in proton-proton collisions at √s=500GeV

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · May 16, 2012 We report measurements of the charge-separated W +( -)→e +( -) +ν e(ν ̄e) and Z/γ *→e +e - production cross sections at mid-rapidity in proton-prot ... Full text Cite

Directed flow of identified particles in Au+Au collisions at √[SNN]=200 GeV at RHIC.

Journal Article Physical review letters · May 2012 STAR's measurements of directed flow (v1) around midrapidity for π±, K±, KS0, p, and p[over ¯] in Au+Au collisions at √[sNN]=200 GeV are presented. A negative v1(y) slope is observed for most of produced particles (π±, K±, KS0, and p[over ¯]). In 5%-30% c ... Full text Cite

First observation of B(s)(0) → J/ψη and B(s)(0) → J/ψη'.

Journal Article Physical review letters · May 2012 We report first observations of B(s)(0) → J/ψη and B(s)(0) → J/ψη'. The results are obtained from 121.4 fb(-1) of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+ e- collider. We obtain the branching fractions B(B(s)(0) → J/ψη) ... Full text Cite

Search for CP violation in D± meson decays to ϕπ±.

Journal Article Physical review letters · February 2012 We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D(±)→K(+)K(-)π(±) and the Cabibbo-favored decays D(s)(±)→K(+)K(-)π(±) in the K(+)K(-) ... Full text Cite

System size and energy dependence of near-side dihadron correlations

Journal Article Physical Review C Nuclear Physics · January 6, 2012 Two-particle azimuthal (Δφ) and pseudorapidity (Δη) correlations using a trigger particle with large transverse momentum (p T) in d+Au, Cu+Cu, and Au+Au collisions at √sNN = 62.4 GeV and 200 GeV from the STAR experiment at the Relativ ... Full text Cite

Interference Fragmentation in SIDIS, pp and e+e-

Journal Article Nuovo Cimento Della Societa Italiana Di Fisica C · January 1, 2012 This review highlights some recent developments in the measurement of the transverse-spin-dependent Interference Fragmentation Functions and di-hadron correlations in semi-inclusive deep inelastic scattering and proton-proton scattering. The latter measure ... Full text Cite

RECENT RESULTS FROM RHIC SPIN AND BELLE FRAGMENTATION FUNCTION MEASUREMENTS

Journal Article International Journal of Modern Physics: Conference Series · January 2012 This contribution summarizes recent results from the RHIC spin program and the measurement of light quark fragmentation functions at Belle. ... Full text Cite

First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P).

Journal Article Physical review letters · January 2012 We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-)→h(b)(nP)π(+)π(-) using a 121.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle ... Full text Cite

Study of B ±→K ±(K SKπ) 0 decay and determination of η c and η c(2S) parameters

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · December 6, 2011 We report the results of a study of B ±→K ±η c and B ±→K ±η c(2S) decays followed by η c and η c(2S) decays to (K SKπ) 0. The results are obtained ... Full text Cite

Fragmentation function measurements at Belle

Conference Aip Conference Proceedings · December 1, 2011 The precision measurement of fragmentation functions is an important requirement to study the spin structure of the nucleon. Unpolarized fragmentation functions at reasonably low scale and high fractional energy are necessary to complement the measurements ... Full text Cite

Observation of two charged bottomonium-like resonances

Conference Proceedings of the 9th International Conference on Flavor Physics and CP Violation, FPCP 2011 · December 1, 2011 We report the observation of two narrow structures at 10610 MeV/c 2 and 10650 MeV/c2 in the π ±γ(nS) (n = 1,2,3) and π±hb(mP) (m = 1,2) mass spectra that are produced in association with a single charged pion in γ(5S) decays. The measured masses and widths ... Cite

Cold nuclear matter effects on J/ψ yields as a function of rapidity and nuclear geometry in d+A collisions at sqrt[s(NN)]=200 GeV.

Journal Article Physical review letters · September 2011 We present measurements of J/ψ yields in d+Au collisions at sqrt[s(NN)]=200 GeV recorded by the PHENIX experiment and compare them with yields in p+p collisions at the same energy per nucleon-nucleon collision. The measurements cover a large kinematic ran ... Full text Cite

Search for CP violation in τ±→K(S)0π±ντ decays at Belle.

Journal Article Physical review letters · September 2011 We report on a search for CP violation in τ(±)→K(S)(0)π(±)ν(τ) decays using a data sample of 699 fb(-1) collected by the Belle experiment at the KEKB electron-positron asymmetric-energy collider. The CP asymmetry is measured in four bins of the invariant m ... Full text Cite

Gluons and the quark sea at high energies: distributions, polarization, tomography

Journal Article · August 5, 2011 This report is based on a ten-week program on "Gluons and the quark sea at high-energies", which took place at the Institute for Nuclear Theory in Seattle in Fall 2010. The principal aim of the program was to develop and sharpen the science case for an Ele ... Link to item Cite

Observation of transverse polarization asymmetries of charged pion pairs in e+e- annihilation near √s = 10.58 GeV.

Journal Article Physical review letters · August 2011 The interference fragmentation function translates the fragmentation of a quark with a transverse projection of the spin into an azimuthal asymmetry of two final-state hadrons. In e(+)e(-) annihilation the product of two interference fragmentation function ... Full text Cite

Observation of X(3872)→J/ψγ and search for X(3872)→ψ'γ in B decays.

Journal Article Physical review letters · August 2011 We report a study of B→(J/ψγ)K and B→(ψ'γ)K decay modes using 772×10⁶ B ̅B events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We observe X(3872)→J/ψγ and report the first evidence for χ(c2)→J/ψγ ... Full text Cite

Evidence for the suppressed decay B(-)→DK(-), D→K(+)π(-).

Journal Article Physical review letters · June 2011 The suppressed decay chain B(-)→DK(-), D→K(+)π(-), where D indicates a D(¯)(0) or D(0) state, provides important information on the CP-violating angle ϕ(3). We measure the ratio R(DK) of the decay rates to the favored mode B(-)→DK(-), D→K(-)π(+) to be R(DK ... Full text Cite

Search for lepton-flavor-violating τ decays into a lepton and a vector meson

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · May 16, 2011 We search for lepton-flavor-violating τ→ℓV0 decays, where ℓ is an electron or muon and V0 is one of the vector mesons ρ0, φ, ω, K*0 and K*0. We use 854 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No evidence ... Full text Cite

Measurement of the decay B0→π-ℓ+ν and determination of

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · April 1, 2011 We present a measurement of the charmless semileptonic decay B0→π-ℓ+ν using a data sample containing 657×106 BB̄ events collected with the Belle detector at the KEKB asymmetric-energy e+e- collider operating near ... Full text Cite

Erratum: Study of the decays B→Ds1(2536)+D ̄(*) (Physical Review D - Particles, Fields, Gravitation and Cosmology (2011) 83:5 (059902))

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · March 24, 2011 Full text Cite

Study of the decays B→Ds1(2536)+D ̄(*)

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · March 14, 2011 We report a study of the decays B→Ds1(2536) +D̄(*), where D ̄(*) is D̄0, D- or D*-, using a sample of 657×106BB̄ pairs collected at the Υ(4S) resonance with the ... Full text Cite

Observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370).

Journal Article Physical review letters · March 2011 We report the observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370), which are CP eigenstate decay modes. These results are obtained from 121.4 fb⁻¹ of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e(+)e⁻ collider. ... Full text Cite

Cross section and parity-violating spin asymmetries of W± boson production in polarized p + p collisions at sqrt[s] = 500 GeV.

Journal Article Physical review letters · February 2011 Large parity-violating longitudinal single-spin asymmetries A(L)(e+) = -0.86(-0.14) (+0.30) and A(L)(e-) = 0.88(-0.71) (+0.12) are observed for inclusive high transverse momentum electrons and positrons in polarized p+p collisions at a center-of-mass energ ... Full text Cite

Measurement of e +e -→Ds()+Ds()- cross sections near threshold using initial-state radiation

Journal Article Physical Review D Particles Fields Gravitation and Cosmology · January 6, 2011 We report a measurement of exclusive e⊃+e⊃-→Ds(*)+D s(*)- cross sections as a function of center-of-mass energy near the Ds(*)+Ds(*)- threshold with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an i ... Full text Cite

Forward transverse single spin asymmetries at PHENIX

Conference Journal of Physics Conference Series · January 1, 2011 Recent measurements of single transverse spin asymmetries in proton-proton collisions measured by the PHENIX experiment at RHIC are presented. The focus is on the single particle left-right asymmetry AN for π0 at √s = 200 GeV and √s = ... Full text Cite

Observation of two charged bottomonium-like resonances

Conference Proceedings of the 9th International Conference on Flavor Physics and CP Violation, FPCP 2011 · January 1, 2011 We report the observation of two narrow structures at 10610 MeV/c 2 and 10650 MeV/c2 in the π ±γ(nS) (n = 1,2,3) and π±hb(mP) (m = 1,2) mass spectra that are produced in association with a single charged pion in γ(5S) decays. The measured masses and widths ... Cite

Observation of two charged bottomonium-like resonances

Conference Proceedings of the 9th International Conference on Flavor Physics and CP Violation Fpcp 2011 · January 1, 2011 We report the observation of two narrow structures at 10610 MeV/c 2 and 10650 MeV/c2 in the π ±γ(nS) (n = 1,2,3) and π±hb(mP) (m = 1,2) mass spectra that are produced in association with a single charged pion in ... Cite

Transverse spin results from PHENIX

Conference Proceedings of Science · December 1, 2010 The Relativistic Heavy Ion Collider, the first polarized proton proton collider, has opened new opportunities to measure transverse single spin asymmetries in a new kinematic regime where perturbative QCD can be applied. PHENIX is one of the ongoing experi ... Cite

Future PHENIX calorimetry and trigger upgrades

Conference Proceedings of Science · December 1, 2010 In the near future, the PHENIX experiment at Brookhaven National Laboratory will install several upgrades to enable an extended physics program in the next decade. Centerpieces of this effort will be new vertex detectors, forward calorimetry and a muon tri ... Cite

Transverse spin results from PHENIX

The spin-dependent structure function of the proton g1p and a test of the Bjorken sum rule

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · July 5, 2010 The inclusive double-spin asymmetry, A1p, has been measured at COMPASS in deep-inelastic polarised muon scattering off a large polarised NH3 target. The data, collected in the year 2007, cover the range Q2 > 1 (G ... Full text Cite

Observation of a J(PC)=1-+ exotic resonance in diffractive dissociation of 190 GeV/c π- into π- π- π+.

Journal Article Physical review letters · June 2010 The COMPASS experiment at the CERN SPS has studied the diffractive dissociation of negative pions into the π- π- π+ final state using a 190 GeV/c pion beam hitting a lead target. A partial wave analysis has been performed on a sample of 420,000 events tak ... Full text Cite

Azimuthal asymmetries of charged hadrons produced by high-energy muons scattered off longitudinally polarised deuterons

Journal Article European Physical Journal C · January 1, 2010 Azimuthal asymmetries in semi-inclusive production of positive (h+) and negative hadrons (h-) have been measured by scattering 160 GeV muons off longitudinally polarised deuterons at CERN. The asymmetries were decomposed in several te ... Full text Cite

Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · January 1, 2010 Double-spin asymmetries for production of charged pions and kaons in semi-inclusive deep-inelastic muon scattering have been measured by the COMPASS experiment at CERN. The data, obtained by scattering a 160 GeV muon beam off a longitudinally polarised NH< ... Full text Cite

Measurement of the Collins and Sivers asymmetries on transversely polarised protons

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · January 1, 2010 The Collins and Sivers asymmetries for charged hadrons produced in deeply inelastic scattering on transversely polarised protons have been extracted from the data collected in 2007 with the CERN SPS muon beam tuned at 160 GeV/. c. At large values of the Bj ... Full text Cite

First Measurement of the Interference Fragmentation Function in $e^+e^-$ at Belle

Journal Article · December 2, 2009 A first measurement of the di-hadron interference fragmentation function of light quarks in pion pairs with the Belle detector is presented. The chiral odd nature of this fragmentation function allows the use as a quark polarimeter sensitive to the transve ... Link to item Cite

Flavour separation of helicity distributions from deep inelastic muon-deuteron scattering

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · September 28, 2009 We present a LO evaluation of helicity densities of valence, Δ uv + Δ dv, non-strange sea, Δ over(u, ̄) + Δ over(d, ̄), and strange quarks, Δs (assumed to be equal to Δ over(s, ̄)). They have been obtained from the inclusive asymmetry A< ... Full text Cite

Measurement of transverse spin dependent fragmentation functions at Belle

Conference Aip Conference Proceedings · August 4, 2009 The topic of this article is the measurement of the transverse spin dependent Collins and dihadron interference fragmentation functions at the Belle experiment. Recent results and projections for future measurements will be presented. ... Full text Cite

Gluon polarisation in the nucleon and longitudinal double spin asymmetries from open charm muoproduction

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · June 1, 2009 The gluon polarisation in the nucleon has been determined by detecting charm production via D0 meson decay to charged K and π in polarised muon scattering off a longitudinally polarised deuteron target. The data were taken by the COMPASS Collabo ... Full text Cite

Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · March 16, 2009 The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COMPASS are presented. The results for charged pions and charged and ... Full text Cite

Measurement of the longitudinal spin transfer to Λ and barΛ hyperons in polarised muon DIS

Journal Article European Physical Journal C · January 1, 2009 The longitudinal polarisation transfer from muons to Λ and \bar\Λ hyperons, DLLΛ(barΛ),has been studied in deep-inelastic scattering off an unpolarised isoscalar target at the COMPASS experiment at CERN. The spin transfers to Λ and barΛ produced ... Full text Cite

Basics of feature selection and statistical learning for high-energy physics

Conference Inverted CERN School of Computing Icsc 2005 and Icsc 2006 Proceedings · December 1, 2008 This document introduces basics in data preparation, feature selection and learning basics for high-energy physics tasks. The emphasis is on feature selection by principal component analysis, information gain and significance measures for features. As exam ... Cite

Support vector machines in high-energy physics

Conference Inverted CERN School of Computing Icsc 2005 and Icsc 2006 Proceedings · December 1, 2008 This lecture introduces the support vector algorithms for classification and regression. They are an application of the so-called kernel trick, which allows the extension of a certain class of linear algorithms to the non-linear case. The kernel trick will ... Cite

The polarised valence quark distribution from semi-inclusive DIS

Journal Article Physics Letters Section B Nuclear Elementary Particle and High Energy Physics · March 6, 2008 The semi-inclusive difference asymmetry Ah+ - h- for hadrons of opposite charge has been measured by the COMPASS experiment at CERN. The data were collected in the years 2002-2004 using a 160 GeV polarised muon beam scatter ... Full text Cite

The COMPASS experiment at CERN

Journal Article Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · July 11, 2007 The COMPASS experiment makes use of the CERN SPS high-intensity muon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing particles are detected in coincidence with the incoming muon or ... Full text Cite

Measurement of Transverse Spin Effects at COMPASS

Journal Article · May 20, 2007 By measuring transverse single spin asymmetries one has access to the transversity distribution function $\Delta_T q(x)$ and the transverse momentum dependent Sivers function $q_0^T(x,\vec{k}_T)$. New measurements from identified hadrons and hadron pairs, ... Link to item Cite

Double spin asymmetry in exclusive ρ0 muoproduction at COMPASS

Journal Article European Physical Journal C · January 1, 2007 The longitudinal double spin asymmetry A1ρ for exclusive leptoproduction of ρ0 mesons, μ+N→μ+N+ρ, is studied using the COMPASS 2002 and 2003 data. The measured reaction is incoherent exclusive ρ0 production on p ... Full text Cite

Invariance in kernel methods by haar-integration kernels

Conference Lecture Notes in Computer Science · January 1, 2005 We address the problem of incorporating transformation invariance in kernels for pattern analysis with kernel methods. We introduce a new class of kernels by so called Haar-integration over transformations. This results in kernel functions, which are posit ... Full text Cite