- Gando, A
- Gando, Y
- Hanakago, H
- Ikeda, H
- Inoue, K
- Ishidoshiro, K
- Ishikawa, H
- Kishimoto, Y
- Koga, M
- Matsuda, R
- Matsuda, S
- Mitsui, T
- Motoki, D
- Nakajima, K
- Nakamura, K
- Obata, A
- Oki, A
- Oki, Y
- Otani, M
- Shimizu, I
- Shirai, J
- Suzuki, A
- Tamae, K
- Ueshima, K
- Watanabe, H
- Xu, BD
- Yamada, S
- Yamauchi, Y
- Yoshida, H
- Kozlov, A
- Takemoto, Y
- Yoshida, S
- Grant, C
- Keefer, G
- McKee, DW
- Piepke, A
- Banks, TI
- Bloxham, T
- Freedman, SJ
- Fujikawa, BK
- Han, K
- Hsu, L
- Ichimura, K
- Murayama, H
- O'Donnell, T
- Steiner, HM
- Winslow, LA
- Dwyer, D
- Mauger, C
- McKeown, RD
- Zhang, C
- Berger, BE
- Lane, CE
- Maricic, J
- Miletic, T
- Learned, JG
- Sakai, M
- Horton-Smith, GA
- Tang, A
- Downum, KE
- Tolich, K
- Efremenko, Y
- Kamyshkov, Y
- Perevozchikov, O
- Karwowski, HJ
- Markoff, DM
- Tornow, W
- Detwiler, JA
- Enomoto, S
- Heeger, K
- Decowski, MP
- et al.
© 2015 American Physical Society. We report a measurement of the neutrino-electron elastic scattering rate of 862 keV Be7 solar neutrinos based on a 165.4 kt d exposure of KamLAND. The observed rate is 582±94(kt d)-1, which corresponds to an 862-keV Be7 solar neutrino flux of (3.26±0.52)×109cm-2s-1, assuming a pure electron-flavor flux. Comparing this flux with the standard solar model prediction and further assuming three-flavor mixing, a νe survival probability of 0.66±0.15 is determined from the KamLAND data. Utilizing a global three-flavor oscillation analysis, we obtain a total Be7 solar neutrino flux of (5.82±1.02)×109cm-2s-1, which is consistent with the standard solar model predictions.
