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Measurement of the CP-violating phase ϕs in Bs0→J/ψϕ decays in ATLAS at 13 TeV

Publication ,  Journal Article
Aad, G; Abbott, B; Abbott, DC; Abdinov, O; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; Ai, X ...
Published in: European Physical Journal C
April 1, 2021
Published version (DOI)

A measurement of the Bs0→J/ψϕ decay parameters using 80.5fb-1 of integrated luminosity collected with the ATLAS detector from 13 Te proton–proton collisions at the LHC is presented. The measured parameters include the CP-violating phase ϕs, the width difference Δ Γ s between the Bs0 meson mass eigenstates and the average decay width Γ s. The values measured for the physical parameters are combined with those from 19.2fb-1 of 7 and 8 Te data, leading to the following: ϕs=-0.087±0.036(stat.)±0.021(syst.)radΔΓs=0.0657±0.0043(stat.)±0.0037(syst.)ps-1Γs=0.6703±0.0014(stat.)±0.0018(syst.)ps-1Results for ϕs and Δ Γ s are also presented as 68% confidence level contours in the ϕs–Δ Γ s plane. Furthermore the transversity amplitudes and corresponding strong phases are measured. ϕs and Δ Γ s measurements are in agreement with the Standard Model predictions.

Duke Scholars

Ayana T. Arce
Author Ayana T. Arce Physics
Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Mark C. Kruse
Author Mark C. Kruse Physics
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Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-021-09011-0

EISSN

1434-6052

ISSN

1434-6044

Publication Date

April 1, 2021

Volume

81

Issue

4

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abud, A. A., Abeling, K., … Ferraz, V. A. (2021). Measurement of the CP-violating phase ϕs in Bs0→J/ψϕ decays in ATLAS at 13 TeV. European Physical Journal C, 81(4). https://doi.org/10.1140/epjc/s10052-021-09011-0
Aad, G., B. Abbott, D. C. Abbott, O. Abdinov, A. A. Abud, K. Abeling, D. K. Abhayasinghe, et al. “Measurement of the CP-violating phase ϕs in Bs0→J/ψϕ decays in ATLAS at 13 TeV.” European Physical Journal C 81, no. 4 (April 1, 2021). https://doi.org/10.1140/epjc/s10052-021-09011-0.
Aad G, Abbott B, Abbott DC, Abdinov O, Abud AA, Abeling K, et al. Measurement of the CP-violating phase ϕs in Bs0→J/ψϕ decays in ATLAS at 13 TeV. European Physical Journal C. 2021 Apr 1;81(4).
Aad, G., et al. “Measurement of the CP-violating phase ϕs in Bs0→J/ψϕ decays in ATLAS at 13 TeV.” European Physical Journal C, vol. 81, no. 4, Apr. 2021. Scopus, doi:10.1140/epjc/s10052-021-09011-0.
Aad G, Abbott B, Abbott DC, Abdinov O, Abud AA, Abeling K, Abhayasinghe DK, Abidi SH, AbouZeid OS, Abraham NL, Abramowicz H, Abreu H, Abulaiti Y, Acharya BS, Achkar B, Adachi S, Adam L, Bourdarios CA, Adamczyk L, Adamek L, Adelman J, Adersberger M, Adiguzel A, Adorni S, Adye T, Affolder AA, Afik Y, Agapopoulou C, Agaras MN, Aggarwal A, Agheorghiesei C, Aguilar-Saavedra JA, Ahmadov F, Ahmed WS, Ai X, Aielli G, Akatsuka S, Åkesson TPA, Akilli E, Akimov AV, Khoury KA, Alberghi GL, Albert J, Verzini MJA, Alderweireldt S, Aleksa M, Aleksandrov IN, Alexa C, Alexandre D, Alexopoulos T, Alfonsi A, Alhroob M, Ali B, Alimonti G, Alison J, Alkire SP, Allaire C, Allbrooke BMM, Allen BW, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Alshehri AA, Estevez MA, Piqueras DÁ, Alviggi MG, Coutinho YA, Ambler A, Ambroz L, Amelung C, Amidei D, Santos SPAD, Amoroso S, Amrouche CS, An F, Anastopoulos C, Andari N, Andeen T, Anders CF, Anders JK, Andreazza A, Andrei V, Anelli CR, Angelidakis S, Angerami A, Anisenkov AV, Annovi A, Antel C, Anthony MT, Antonelli M, Antrim DJA, Anulli F, Aoki M, Pozo JAA, Bella LA, Arabidze G, Araque JP, Ferraz VA. Measurement of the CP-violating phase ϕs in Bs0→J/ψϕ decays in ATLAS at 13 TeV. European Physical Journal C. 2021 Apr 1;81(4).
Journal cover image

Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-021-09011-0

EISSN

1434-6052

ISSN

1434-6044

Publication Date

April 1, 2021

Volume

81

Issue

4

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics