Publications [#248778] of Christopher Walter

Papers Published
  1. 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 et al., Three flavor neutrino oscillation analysis of atmospheric neutrinos in Super-Kamiokande, Physical Review D - Particles, Fields, Gravitation, and Cosmology, vol. 74 no. 3 (2006), pp. 032002 [pdf], [doi] .

    Abstract:
    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<sin 2θ23<0.65 for the normal mass hierarchy. Weaker constraints, sin 2θ13<0.27 and 0.37<sin 2θ23<0.69, are obtained for the inverted mass hierarchy case. © 2006 The American Physical Society.