抄録
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.
本文言語 | English |
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論文番号 | 032002 |
ジャーナル | Physical Review D - Particles, Fields, Gravitation and Cosmology |
巻 | 74 |
号 | 3 |
DOI | |
出版ステータス | Published - 2006 |
外部発表 | はい |
ASJC Scopus subject areas
- 核物理学および高エネルギー物理学
- 物理学および天文学(その他)