Search for differences in oscillation parameters for atmospheric neutrinos and antineutrinos at Super-Kamiokande

K. Abe, Y. Hayato, T. Iida, M. Ikeda, K. Iyogi, J. Kameda, Y. Koshio, Y. Kozuma, M. Miura, S. Moriyama, M. Nakahata, S. Nakayama, Y. Obayashi, H. Sekiya, M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takenaga, Y. Takeuchi, K. UenoK. Ueshima, H. Watanabe, S. Yamada, T. Yokozawa, C. Ishihara, H. Kaji, K. P. Lee, T. Kajita, K. Kaneyuki, T. McLachlan, K. Okumura, Y. Shimizu, N. Tanimoto, K. Martens, M. R. Vagins, L. Labarga, L. M. Magro, F. Dufour, E. Kearns, M. Litos, J. L. Raaf, J. L. Stone, L. R. Sulak, M. Goldhaber, K. Bays, W. R. Kropp, S. Mine, C. Regis, M. B. Smy, H. W. Sobel, K. S. Ganezer, J. Hill, W. E. Keig, J. S. Jang, J. Y. Kim, I. T. Lim, J. B. Albert, K. Scholberg, C. W. Walter, R. Wendell, T. M. Wongjirad, S. Tasaka, J. G. Learned, S. Matsuno, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, K. Nishikawa, H. Nishino, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki, A. Minamino, T. Nakaya, Y. Fukuda, Y. Itow, G. Mitsuka, T. Tanaka, C. K. Jung, I. Taylor, C. Yanagisawa, H. Ishino, A. Kibayashi, S. Mino, T. Mori, M. Sakuda, H. Toyota, Y. Kuno, S. B. Kim, B. S. Yang, T. Ishizuka, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, M. Yokoyama, Y. Totsuka, S. Chen, Y. Heng, Z. Yang, H. Zhang, D. Kielczewska, P. Mijakowski, K. Connolly, M. Dziomba, R. J. Wilkes

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67 Citations (Scopus)

Abstract

We present a search for differences in the oscillations of antineutrinos and neutrinos in the Super-Kamiokande-I, -II, and -III atmospheric neutrino sample. Under a two-flavor disappearance model with separate mixing parameters between neutrinos and antineutrinos, we find no evidence for a difference in oscillation parameters. Best-fit antineutrino mixing is found to be at (Δm ̄2,sin 22θ̄)=(2.0×10 -3eV 2,1.0) and is consistent with the overall Super-K measurement.

Original languageEnglish
Article number241801
JournalPhysical Review Letters
Volume107
Issue number24
DOIs
Publication statusPublished - Dec 7 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Abe, K., Hayato, Y., Iida, T., Ikeda, M., Iyogi, K., Kameda, J., Koshio, Y., Kozuma, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Takeuchi, Y., ... Wilkes, R. J. (2011). Search for differences in oscillation parameters for atmospheric neutrinos and antineutrinos at Super-Kamiokande. Physical Review Letters, 107(24), [241801]. https://doi.org/10.1103/PhysRevLett.107.241801