2001Physical Review LettersOpen access

Constraints on Neutrino Oscillations Using 1258 Days of Super-Kamiokande Solar Neutrino Data

Satoshi Fukuda, Y. Fukuda, M. Ishitsuka, Y. Itow, T. Kajita, J. Kameda, K. Kaneyuki, Kazuyoshi Kobayashi, Y. Koshio, M. Miura, S. Moriyama, M. Nakahata, S. Nakayama, Atsushi Okada, N. Sakurai, M. Shiozawa, Y. Suzuki, H. Takeuchi, Y. Takeuchi, T. Toshito, Y. Totsuka, S. Yamada, S. Desai, M. Earl, E. Kearns, M. D. Messier, K. Scholberg, J. L. Stone, Lawrence Sulak, C. W. Walter, M. Goldhaber, T. Barszczak, D. Casper, W. Gajewski, W. R. Kropp, S. Mine, D. W. Liu, L. R. Price, M. Smy, H. W. Sobel, M. R. Vagins, K. S. Ganezer, W. E. Keig, R. W. Ellsworth, S. Tasaka, A. Kibayashi, J. G. Learned, S. Matsuno, D. Takemori, Y. Hayato, T. Ishii, T. Kobayashi, K. Nakamura, Y. Obayashi, Y. Oyama, Akito Sakai, M. Sakuda, M. Kohama, Y. Suzuki, T. Inagaki, T. Nakaya, K. Nishikawa, T. J. Haines, E. Blaufuss, S. Dazeley, K. B. Lee, R. Svoboda, J. A. Goodman, G. Guillian, G. W. Sullivan, D. Turčan, A. Habig, J. Hill, C. K. Jung, K. Martens, M. Malek, C. Mauger, C. McGrew, E. Sharkey, B. Viren, C. Yanagisawa, C. Mitsuda, K. Miyano, C. Saji, T. Shibata, Yuji Kajiyama, Y. Nagashima, Koh‐hei Nitta, M. Takita, M. Yoshida, H. I. Kim, S. B. Kim, J. Yoo, H. Okazawa, T. Ishizuka, Masato Eto, Y. Gando, T. Hasegawa, K. Inoue, K. Ishihara, T. Maruyama, J. Shirai, Y. Suzuki, M. Koshiba, Yoshikiyo Hatakeyama, Y. Ichikawa, Masafumi Koike, K. Nishijima, H. Fujiyasu, H. Ishino, M. Morii, Y. Watanabe, Urszula Golebiewska, D. Kiełczewska, S. Boyd, A. L. Stachyra, R. J. Wilkes, K. K. Young

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Abstract

We report the result of a search for neutrino oscillations using precise measurements of the recoil electron energy spectrum and zenith angle variations of the solar neutrino flux from 1258 days of neutrino-electron scattering data in Super-Kamiokande. The absence of significant zenith angle variation and spectrum distortion places strong constraints on neutrino mixing and mass difference in a flux-independent way. Using the Super-Kamiokande flux measurement in addition, two allowed regions at large mixing are found.

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What this paper is about

We report the result of a search for neutrino oscillations using precise measurements of the recoil electron energy spectrum and zenith angle variations of the solar neutrino flux from 1258 days of neutrino-electron scattering data in Super-Kamiokande. The absence of significant zenith angle variation and spectrum distortion places strong constraints on neutrino mixing and mass difference in a flux-independent way. Using the Super-Kamiokande flux measurement in addition, two allowed regions at large mixing are found.

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Available abstract

We report the result of a search for neutrino oscillations using precise measurements of the recoil electron energy spectrum and zenith angle variations of the solar neutrino flux from 1258 days of neutrino-electron scattering data in Super-Kamiokande. The absence of significant zenith angle variation and spectrum distortion places strong constraints on neutrino mixing and mass difference in a flux-independent way. Using the Super-Kamiokande flux measurement in addition, two allowed regions at large mixing are found.

Key concepts: Super-Kamiokande, Solar neutrino, Physics, Neutrino, Zenith, Flux (metallurgy), Solar neutrino problem, Neutrino oscillation

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