Scholars@Duke

Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND

Publication ,  Journal Article
Gando, A; Gando, Y; Ichimura, K; Ikeda, H; Inoue, K; Kibe, Y; Kishimoto, Y; Koga, M; Minekawa, Y; Mitsui, T; Morikawa, T; Nagai, N; Narita, K ...
Published in: Physical Review D Particles Fields Gravitation and Cosmology
March 4, 2011
Published version (DOI)

We present new constraints on the neutrino oscillation parameters Δm212, θ12, and θ13 from a three-flavor analysis of solar and KamLAND data. The KamLAND data set includes data acquired following a radiopurity upgrade and amounts to a total exposure of 3.49×1032 target-proton-year. Under the assumption of CPT invariance, a two-flavor analysis (θ13=0) of the KamLAND and solar data yields the best-fit values tan2θ12=0.444-0.030+0.036 and Δm212=7.50-0.20+0.19×10-5eV2; a three-flavor analysis with θ13 as a free parameter yields the best-fit values tan2θ12=0.452-0.033+0.035, Δm212=7.50-0.20+0.19×10-5eV2, and sin2θ 13=0.020-0.016+0.016. This θ13 interval is consistent with other recent work combining the CHOOZ, atmospheric and long-baseline accelerator experiments. We also present a new global θ13 analysis, incorporating the CHOOZ, atmospheric, and accelerator data, which indicates sin2θ13=0.009-0. 007+0.013. A nonzero value is suggested, but only at the 79% C.L. © 2011 American Physical Society.

Duke Scholars

Diane M Markoff
Author Diane M Markoff Physics
Werner Tornow
Author Werner Tornow Physics

Published In

Physical Review D Particles Fields Gravitation and Cosmology

DOI

10.1103/PhysRevD.83.052002

EISSN

1550-2368

ISSN

1550-7998

Publication Date

March 4, 2011

Volume

83

Issue

5

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

APA
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ICMJE
MLA
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Gando, A., Gando, Y., Ichimura, K., Ikeda, H., Inoue, K., Kibe, Y., … Decowski, M. P. (2011). Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND. Physical Review D Particles Fields Gravitation and Cosmology, 83(5). https://doi.org/10.1103/PhysRevD.83.052002
Gando, A., Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, et al. “Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND.” Physical Review D Particles Fields Gravitation and Cosmology 83, no. 5 (March 4, 2011). https://doi.org/10.1103/PhysRevD.83.052002.
Gando A, Gando Y, Ichimura K, Ikeda H, Inoue K, Kibe Y, et al. Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND. Physical Review D Particles Fields Gravitation and Cosmology. 2011 Mar 4;83(5).
Gando, A., et al. “Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND.” Physical Review D Particles Fields Gravitation and Cosmology, vol. 83, no. 5, Mar. 2011. Scopus, doi:10.1103/PhysRevD.83.052002.
Gando A, Gando Y, Ichimura K, Ikeda H, Inoue K, Kibe Y, Kishimoto Y, Koga M, Minekawa Y, Mitsui T, Morikawa T, Nagai N, Nakajima K, Nakamura K, Narita K, Shimizu I, Shimizu Y, Shirai J, Suekane F, Suzuki A, Takahashi H, Takahashi N, Takemoto Y, Tamae K, Watanabe H, Xu BD, Yabumoto H, Yoshida H, Yoshida S, Enomoto S, Kozlov A, Murayama H, Grant C, Keefer G, Piepke A, Banks TI, Bloxham T, Detwiler JA, Freedman SJ, Fujikawa BK, Han K, Kadel R, O’Donnell T, Steiner HM, Dwyer DA, McKeown RD, Zhang C, Berger BE, Lane CE, Maricic J, Miletic T, Batygov M, Learned JG, Matsuno S, Sakai M, Horton-Smith GA, Downum KE, Gratta G, Efremenko Y, Perevozchikov O, Karwowski HJ, Markoff DM, Tornow W, Heeger KM, Decowski MP. Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND. Physical Review D Particles Fields Gravitation and Cosmology. 2011 Mar 4;83(5).

Published In

Physical Review D Particles Fields Gravitation and Cosmology

DOI

10.1103/PhysRevD.83.052002

EISSN

1550-2368

ISSN

1550-7998

Publication Date

March 4, 2011

Volume

83

Issue

5

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences