Three flavor neutrino oscillation analysis of atmospheric neutrinos in Super-Kamiokande
We report on the results of a three-flavor oscillation analysis using Super-Kamiokande I atmospheric neutrino data, with the assumption of one mass scale dominance (Δm122=0). No significant flux change due to matter effect, which occurs when neutrinos propagate inside the Earth for θ13≠0, has been seen either in a multi-GeV νe-rich sample or in a νμ-rich sample. Both normal and inverted mass hierarchy hypotheses are tested and both are consistent with observation. Using Super-Kamiokande data only, 2-dimensional 90% confidence allowed regions are obtained: mixing angles are constrained to sin 2θ13<0.14 and 0.37<0.65 for the normal mass hierarchy. Weaker constraints, sin 2θ13<0.27 and 0.37<0.69, are obtained for the inverted mass hierarchy case. © 2006 The American Physical Society.
Hosaka, J; Ishihara, K; Kameda, J; Koshio, Y; Minamino, A; Mitsuda, C; Miura, M; Moriyama, S; Nakahata, M; Namba, T; Obayashi, Y; Shiozawa, M; Suzuki, Y; Takeda, A; Takeuchi, Y; Yamada, S; Higuchi, I; Ishitsuka, M; Kajita, T; Kaneyuki, K; Mitsuka, G; Nakayama, S; Nishino, H; Okada, A; Okumura, K; Saji, C; Takenaga, Y; Clark, S; Desai, S; Kearns, E; Likhoded, S; Stone, JL; Sulak, LR; Wang, W; Goldhaber, M; Casper, D; Cravens, JP; Kropp, WR; Liu, DW; Mine, S; Regis, C; Smy, MB; Sobel, HW; Sterner, CW; Vagins, MR; Ganezer, KS; Hill, JE; Keig, WE; Jang, JS; Kim, JY; Lim, IT; Scholberg, K; Walter, CW; Wendell, R; Ellsworth, RW; Tasaka, S; Guillian, E; Kibayashi, A; Learned, JG; Matsuno, S; Messier, MD; Hayato, Y; Ichikawa, AK; Ishida, T; Ishii, T; Iwashita, T; Kobayashi, T; Nakadaira, T; Nakamura, K; Nitta, K; Oyama, Y; Totsuka, Y; Suzuki, AT; Hasegawa, M; Kato, I; Maesaka, H; Nakaya, T; Nishikawa, K; Sasaki, T; Sato, H; Yamamoto, S; Yokoyama, M; Haines, TJ; Dazeley, S; Hatakeyama, S; Svoboda, R; Blaufuss, E; Goodman, JA; Sullivan, GW; Turcan, D; Cooley, J; Habig, A; Fukuda, Y; Sato, T; Itow, Y; Jung, CK; Kato, T; Kobayashi, K; Malek, M; Mauger, C
Volume / Issue
Electronic International Standard Serial Number (EISSN)
International Standard Serial Number (ISSN)
Digital Object Identifier (DOI)