Authors
Shingo Abe, T Ebihara, S Enomoto, K Furuno, Y Gando, K Ichimura, H Ikeda, K Inoue, Y Kibe, Y Kishimoto, M Koga, A Kozlov, Y Minekawa, T Mitsui, K Nakajima, K Nakajima, K Nakamura, M Nakamura, K Owada, I Shimizu, Y Shimizu, J Shirai, F Suekane, A Suzuki, Y Takemoto, K Tamae, A Terashima, H Watanabe, E Yonezawa, S Yoshida, J Busenitz, T Classen, C Grant, G Keefer, DS Leonard, D McKee, A Piepke, MP Decowski, JA Detwiler, SJ Freedman, BK Fujikawa, F Gray, E Guardincerri, L Hsu, R Kadel, C Lendvai, K-B Luk, H Murayama, T O’Donnell, HM Steiner, LA Winslow, DA Dwyer, C Jillings, C Mauger, RD McKeown, P Vogel, C Zhang, BE Berger, CE Lane, J Maricic, T Miletic, M Batygov, JG Learned, S Matsuno, S Pakvasa, J Foster, GA Horton-Smith, A Tang, S Dazeley, KE Downum, G Gratta, K Tolich, W Bugg, Y Efremenko, Y Kamyshkov, O Perevozchikov, HJ Karwowski, DM Markoff, W Tornow, KM Heeger, F Piquemal, J-S Ricol, KamLAND Collaboration)
Publication date
2008/6/6
Journal
Physical review letters
Volume
100
Issue
22
Pages
221803
Publisher
American Physical Society
Description
The KamLAND experiment has determined a precise value for the neutrino oscillation parameter and stringent constraints on . The exposure to nuclear reactor antineutrinos is increased almost fourfold over previous results to due to longer livetime and an enlarged fiducial volume. An undistorted reactor energy spectrum is now rejected at . Analysis of the reactor spectrum above the inverse beta decay energy threshold, and including geoneutrinos, gives a best fit at and tan2θ12=0.56-0.07+0.10(stat)-0.06+0.10(syst). Local minima at higher and lower are disfavored at . Combining with solar neutrino data, we obtain and tan2θ12=0.47-0.05+0.06.
Total citations
Scholar articles
S Abe, T Ebihara, S Enomoto, K Furuno, Y Gando… - Physical review letters, 2008