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High Sensitivity Search forν¯e's from the Sun and Other Sources at KamLAND

K. Eguchi, S. Enomoto, K. Furuno, H. Ikeda, K. Ikeda, K. Inoue, K. Ishihara, T. Iwamoto, T. Kawashima, Y. Kishimoto, M. Koga, Y. Koseki (+78 others)
2004 Physical Review Letters  

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2003 pre-print
arXiv:hep-ex/0310047v1 fatcat:d2ww3hswzvdbbni4qyhqjgpbfa
2004 accepted
arXiv:hep-ex/0310047v3 fatcat:zpdzior6ubb7jdlsf4jyurmvcy
2003 pre-print
arXiv:hep-ex/0310047v2 fatcat:uc3g35ctvnefdaj6ebrucn7rvu
Data corresponding to a KamLAND detector exposure of 0.28 kton-year has been used to search for ν̅_e's in the energy range 8.3 MeV < E_ν̅_e < 14.8 MeV. No candidates were found for an expected background of 1.1±0.4 events. This result can be used to obtain a limit on ν̅_e fluxes of any origin. Assuming that all ν̅_e flux has its origin in the Sun and has the characteristic ^8B solar ν_e energy spectrum, we obtain an upper limit of 3.7 × 10^2 cm^-2 s^-1 (90 C.L.) on the ν̅_e flux. We interpret
more » ... is limit, corresponding to 2.8×10^-4 of the Standard Solar Model ^8B ν_e flux, in the framework of spin--flavor precession and neutrino decay models.
doi:10.1103/physrevlett.92.071301 pmid:14995837 fatcat:3b5lodv64fbd7pu4xekzpeb7ky
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Citation

K. Eguchi, S. Enomoto, K. Furuno, H. Ikeda, K. Ikeda, K. Inoue, K. Ishihara, T. Iwamoto, T. Kawashima, Y. Kishimoto, M. Koga, Y. Koseki, T. Maeda, T. Mitsui, M. Motoki, K. Nakajima, H. Ogawa, K. Owada, F. Piquemal, I. Shimizu, J. Shirai, F. Suekane, A. Suzuki, K. Tada, O. Tajima, T. Takayama, K. Tamae, H. Watanabe, J. Busenitz, Z. Djurcic, K. McKinny, D-M. Mei, A. Piepke, E. Yakushev, B. E. Berger, Y. D. Chan, M. P. Decowski, D. A. Dwyer, S. J. Freedman, Y. Fu, B. K. Fujikawa, J. Goldman, K. M. Heeger, K. T. Lesko, K.-B. Luk, H. Murayama, D. R. Nygren, C. E. Okada, A. W. P. Poon, H. M. Steiner, L. A. Winslow, G. A. Horton-Smith, C. Mauger, R. D. McKeown, B. Tipton, P. Vogel, C. E. Lane, T. Miletic, P. W. Gorham, G. Guillian, J. G. Learned, J. Maricic, S. Matsuno, S. Pakvasa, S. Dazeley, S. Hatakeyama, R. Svoboda, B. D. Dieterle, M. DiMauro, J. Detwiler, G. Gratta, K. Ishii, N. Tolich, Y. Uchida, M. Batygov, W. Bugg, Y. Efremenko, Y. Kamyshkov, A. Kozlov, Y. Nakamura, C. R. Gould, H. J. Karwowski, D. M. Markoff, J. A. Messimore, K. Nakamura, R. M. Rohm, W. Tornow, A. R. Young, M-J. Chen, Y-F. Wang. "High Sensitivity Search forν¯e's from the Sun and Other Sources at KamLAND." Physical Review Letters 92.7 (2004)