- Main
Be7 solar neutrino measurement with KamLAND
- 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.
Published Web Location
https://doi.org/10.1103/physrevc.92.055808Abstract
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.
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