Atmospheric Neutrino Oscillations in Three-Flavor Neutrinos. II

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概要

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• We analyze the atmospheric neutrino experiments of SuperKamiokande (535 days) using the three-flavor neutrino framework with the mass hierarchy m_1 ≈ m_2 << m_3. We study the event rations of sub-GeV, multi-GeV and upward through-going muons zenith angle destributions. Taking into account atmospheric and terrestrial experiments, we obtain the allowed regions of mass and mixing parameters Δm^2_<12>, sin^22θ_<12>, Δm^2_<23>, θ_<13> and θ_<23>. The mass parameter Δm^2_lt:23> is restricted to 0.01eV^2-0.0002eV^2. For mixing parameters, there is no difference between the large θ_<12> angle solution and the small one, and θ_<13> < 13^°, 28^° < θ_<23> < 37^° and 53^° < θ_<23> <62^° for Δm^2_<23> = 0.01eV^2, θ_<13> <23^° and 29^° < θ_<23> < 61^° for Δm^2_<23> = 0.002eV^2, 4^° < θ_<13> <22^° and 38^° < θ_<23> < 54^° for Δm^2_lt:23>=0.0002eV^2.

• 理論物理学刊行会の論文
• 1999-09-25

著者

• TESHIMA Tadayuki

  Department of Applied Physics, Chubu Institute of Technology

• Teshima Tadayuki

  Department Of Applied Physics Chubu Institute Of Technology

• Teshima Tadayuki

  Department Of Applied Physics Chubu University

• SAKAI Tadakatsu

  Yukawa Institute for Theoretical Physics, Kyoto University

• SAKAI Toyokazu

  Department of Applied Physics, Chubu University

• Sakai Toyokazu

  Department Of Applied Physics Chubu University

• TESHIMA Tadayuki

  Depariment of Applied Physics, Chubu Institute of Technology

• SAKAI Tadakatsu

  Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics and Astronomy, Tel-Aviv University

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