Autores
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, BD Xu, H Yabumoto, H Yoshida, S Yoshida, S Enomoto, A Kozlov, H Murayama, C Grant, G Keefer, A Piepke, TI Banks, T Bloxham, JA Detwiler, SJ Freedman, BK Fujikawa, K Han, R Kadel, T O’Donnell, HM Steiner, DA Dwyer, RD McKeown, C Zhang, BE Berger, CE Lane, J Maricic, T Miletic, M Batygov, JG Learned, S Matsuno, M Sakai, GA Horton-Smith, KE Downum, G Gratta, Y Efremenko, O Perevozchikov, HJ Karwowski, DM Markoff, W Tornow, KM Heeger, MP Decowski, KamLAND Collaboration
Fecha de publicación
2011/3/4
Revista
Physical Review D
Volumen
83
Número
5
Páginas
052002
Editor
American Physical Society
Descripción
We present new constraints on the neutrino oscillation parameters Δ m 21 2, θ 12, and θ 13 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× 10 32 target-proton-year. Under the assumption of C P T invariance, a two-flavor analysis (θ 13= 0) of the KamLAND and solar data yields the best-fit values tan 2 θ 12= 0.444− 0.030+ 0.036 and Δ m 21 2= 7.50− 0.20+ 0.19× 10− 5 eV 2; a three-flavor analysis with θ 13 as a free parameter yields the best-fit values tan 2 θ 12= 0.452− 0.033+ 0.035, Δ m 21 2= 7.50− 0.20+ 0.19× 10− 5 eV 2, and sin 2 θ 13= 0.020− 0.016+ 0.016. This θ 13 interval is consistent with other recent work combining the CHOOZ, atmospheric and long-baseline accelerator experiments. We also present a new global θ 13 analysis, incorporating the CHOOZ, atmospheric, and …
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A Gando, Y Gando, K Ichimura, H Ikeda, K Inoue… - Physical Review D, 2011
