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arXiv · 1111.5031

Supernova Relic Neutrino Search at Super-Kamiokande

Kamiokande Collaboration·K. Bays·T. Iida·K. Abe·Y. Hayato·K. Iyogi·J. Kameda·Y. Koshio·L. Marti·M. Miura·S. Moriyama·M. Nakahata·S. Nakayama·Y. Obayashi·H. Sekiya·M. Shiozawa·Y. Suzuki·A. Takeda·Y. Takenaga·K. Ueno·K. Ueshima S. Yamada T. Yokozawa H. Kaji T. Kajita·K. Kaneyuki·T. McLachlan·K. Okumura·L. K. Pik·K. Martens·M. Vagins·L. Labarga·E. Kearns·M. Litos·J. L. Raaf·J. L. Stone·L. R. Sulak·W. R. Kropp·S. Mine·C. Regis·A. Renshaw·M. B. Smy·H. W. Sobel·K. S. Ganezer·J. Hill·W. E. Keig·S. Cho·J. S. Jang·J. Y. Kim·I. T. Lim·J. Albert·K. Scholberg·C. W. Walter·R. Wendell·T. Wongjirad·T. Ishizuka·S. Tasaka·J. G. Learned·S. Matsuno·S. Smith·T. Hasegawa·T. Ishida·T. Ishii·T. Kobayashi·T. Nakadaira·K. Nakamura·K. Nishikawa·Y. Oyama·K. Sakashita·T. Sekiguchi·T. Tsukamoto·A. T. Suzuki·Y. Takeuchi·M. Ikeda·K. Matsuoka·A. Minamino·A. Murakami·T. Nakaya·Y. Fukuda·Y. Itow·G. Mitsuka·M. Miyake·T. Tanaka·J. Hignight·J. Imber·C. K. Jung·I. Taylor·C. Yanagisawa·A. Kibayashi·H. Ishino·S. Mino·M. Sakuda·T. Mori·H. Toyota·Y. Kuno·S. B. Kim·B. S. Yang·H. Okazawa·Y. Choi·K. Nishijima·M. Koshiba·Y. Totsuka·M. Yokoyama·Y. Heng
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Abstract

A new Super-Kamiokande (SK) search for Supernova Relic Neutrinos (SRNs) was conducted using 2853 live days of data. Sensitivity is now greatly improved compared to the 2003 SK result, which placed a flux limit near many theoretical predictions. This more detailed analysis includes a variety of improvements such as increased efficiency, a lower energy threshold, and an expanded data set. New combined upper limits on SRN flux are between 2.8 and 3.0 nu_e cm^-2 s^-1 > 16 MeV total positron energy (17.3 MeV E_nu).

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Kamiokande Collaboration, K. Bays, T. Iida, K. Abe, Y. Hayato, K. Iyogi, J. Kameda, Y. Koshio, L. Marti, M. Miura, S. Moriyama, M. Nakahata, S. Nakayama, Y. Obayashi, H. Sekiya, M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takenaga, K. Ueno, K. Ueshima S. Yamada T. Yokozawa H. Kaji T. Kajita, K. Kaneyuki, T. McLachlan, K. Okumura, L. K. Pik, K. Martens, M. Vagins, L. Labarga, E. Kearns, M. Litos, J. L. Raaf, J. L. Stone, L. R. Sulak, W. R. Kropp, S. Mine, C. Regis, A. Renshaw, M. B. Smy, H. W. Sobel, K. S. Ganezer, J. Hill, W. E. Keig, S. Cho, J. S. Jang, J. Y. Kim, I. T. Lim, J. Albert, K. Scholberg, C. W. Walter, R. Wendell, T. Wongjirad, T. Ishizuka, S. Tasaka, J. G. Learned, S. Matsuno, S. Smith, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, K. Nishikawa, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki, Y. Takeuchi, M. Ikeda, K. Matsuoka, A. Minamino, A. Murakami, T. Nakaya, Y. Fukuda, Y. Itow, G. Mitsuka, M. Miyake, T. Tanaka, J. Hignight, J. Imber, C. K. Jung, I. Taylor, C. Yanagisawa, A. Kibayashi, H. Ishino, S. Mino, M. Sakuda, T. Mori, H. Toyota, Y. Kuno, S. B. Kim, B. S. Yang, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, Y. Totsuka, M. Yokoyama, Y. Heng. 2011-11-21. Supernova Relic Neutrino Search at Super-Kamiokande. https://doi.org/10.1103/physrevd.85.052007

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