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

A. Gando; Y. Gando; K. Ichimura; H. Ikeda; K. Inoue; Y. Kibe; Y. Kishimoto; M. Koga; Y. Minekawa; T. Mitsui; T. Morikawa; N. Nagai; K. Nakajima; K. Nakamura; K. Narita; I. Shimizu; Y. Shimizu; J. Shirai; F. Suekane; A. Suzuki; H. Takahashi; N. Takahashi; Y. Takemoto; K. Tamae; H. Watanabe; B. D. Xu; H. Yabumoto; H. Yoshida; S. Yoshida; S. Enomoto; A. Kozlov; H. Murayama; C. Grant; G. Keefer; A. Piepke; T. I. Banks; T. Bloxham; J. A. Detwiler; S. J. Freedman; B. K. Fujikawa; K. Han; R. Kadel; T. O'Donnell; H. M. Steiner; D. A. Dwyer; R. D. McKeown; C. Zhang; B. E. Berger; C. E. Lane; J. Maricic; T. Miletic; M. Batygov; J. G. Learned; S. Matsuno; M. Sakai; G. A. Horton-Smith; K. E. Downum; G. Gratta; Y. Efremenko; O. Perevozchikov; H. J. Karwowski; D. M. Markoff; W. Tornow; K. M. Heeger; M. P. Decowski

doi:10.1103/PhysRevD.83.052002

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

A. Gando, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kibe, Y. Kishimoto, M. Koga, Y. Minekawa, T. Mitsui, T. Morikawa, N. Nagai, K. Nakajima, K. Nakamura, K. Narita, I. Shimizu, Y. Shimizu, J. Shirai, F. Suekane, A. SuzukiH. Takahashi, N. Takahashi, Y. Takemoto, K. Tamae, H. Watanabe, B. D. Xu, H. Yabumoto, H. Yoshida, S. Yoshida, S. Enomoto, A. Kozlov, H. Murayama, C. Grant, G. Keefer, A. Piepke, T. I. Banks, T. Bloxham, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han, R. Kadel, T. O'Donnell, H. M. Steiner, D. A. Dwyer, R. D. McKeown, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, M. Batygov, J. G. Learned, S. Matsuno, M. Sakai, G. A. Horton-Smith, K. E. Downum, G. Gratta, Y. Efremenko, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, K. M. Heeger, M. P. Decowski

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Abstract

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.

Original language	English (US)
Article number	052002
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	83
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.83.052002
State	Published - Mar 4 2011
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.83.052002

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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., ... 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), Article 052002. https://doi.org/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 2011, '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, 052002. https://doi.org/10.1103/PhysRevD.83.052002

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title = "Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND",

abstract = "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.",

author = "A. Gando and Y. Gando and K. Ichimura and H. Ikeda and K. Inoue and Y. Kibe and Y. Kishimoto and M. Koga and Y. Minekawa and T. Mitsui and T. Morikawa and N. Nagai and K. Nakajima and K. Nakamura and K. Narita and I. Shimizu and Y. Shimizu and J. Shirai and F. Suekane and A. Suzuki and H. Takahashi and N. Takahashi and Y. Takemoto and K. Tamae and H. Watanabe and Xu, {B. D.} and H. Yabumoto and H. Yoshida and S. Yoshida and S. Enomoto and A. Kozlov and H. Murayama and C. Grant and G. Keefer and A. Piepke and Banks, {T. I.} and T. Bloxham and Detwiler, {J. A.} and Freedman, {S. J.} and Fujikawa, {B. K.} and K. Han and R. Kadel and T. O'Donnell and Steiner, {H. M.} and Dwyer, {D. A.} and McKeown, {R. D.} and C. Zhang and Berger, {B. E.} and Lane, {C. E.} and J. Maricic and T. Miletic and M. Batygov and Learned, {J. G.} and S. Matsuno and M. Sakai and Horton-Smith, {G. A.} and Downum, {K. E.} and G. Gratta and Y. Efremenko and O. Perevozchikov and Karwowski, {H. J.} and Markoff, {D. M.} and W. Tornow and Heeger, {K. M.} and Decowski, {M. P.}",

year = "2011",

month = mar,

day = "4",

doi = "10.1103/PhysRevD.83.052002",

language = "English (US)",

volume = "83",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "5",

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TY - JOUR

T1 - Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND

AU - Gando, A.

AU - Gando, Y.

AU - Ichimura, K.

AU - Ikeda, H.

AU - Inoue, K.

AU - Kibe, Y.

AU - Kishimoto, Y.

AU - Koga, M.

AU - Minekawa, Y.

AU - Mitsui, T.

AU - Morikawa, T.

AU - Nagai, N.

AU - Nakajima, K.

AU - Nakamura, K.

AU - Narita, K.

AU - Shimizu, I.

AU - Shimizu, Y.

AU - Shirai, J.

AU - Suekane, F.

AU - Suzuki, A.

AU - Takahashi, H.

AU - Takahashi, N.

AU - Takemoto, Y.

AU - Tamae, K.

AU - Watanabe, H.

AU - Xu, B. D.

AU - Yabumoto, H.

AU - Yoshida, H.

AU - Yoshida, S.

AU - Enomoto, S.

AU - Kozlov, A.

AU - Murayama, H.

AU - Grant, C.

AU - Keefer, G.

AU - Piepke, A.

AU - Banks, T. I.

AU - Bloxham, T.

AU - Detwiler, J. A.

AU - Freedman, S. J.

AU - Fujikawa, B. K.

AU - Han, K.

AU - Kadel, R.

AU - O'Donnell, T.

AU - Steiner, H. M.

AU - Dwyer, D. A.

AU - McKeown, R. D.

AU - Zhang, C.

AU - Berger, B. E.

AU - Lane, C. E.

AU - Maricic, J.

AU - Miletic, T.

AU - Batygov, M.

AU - Learned, J. G.

AU - Matsuno, S.

AU - Sakai, M.

AU - Horton-Smith, G. A.

AU - Downum, K. E.

AU - Gratta, G.

AU - Efremenko, Y.

AU - Perevozchikov, O.

AU - Karwowski, H. J.

AU - Markoff, D. M.

AU - Tornow, W.

AU - Heeger, K. M.

AU - Decowski, M. P.

PY - 2011/3/4

Y1 - 2011/3/4

N2 - 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.

AB - 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.

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JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

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ER -

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

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