2001 Fiscal Year Annual Research Report

ニュートリノの質量行列とCPの破れの研究

Research Project

Project/Area Number	12047218
Research Institution	Osaka University
Principal Investigator	高杉英一大阪大学, 大学院・理学研究科, 教授 (00135633)
Co-Investigator(Kenkyū-buntansha)	末松大二郎金沢大学, 理学部, 助教授 (90206384) 福山武志立命館大学, 理工学部, 教授 (40167622) 田中実大阪大学, 大学院・理学研究科, 助手 (70273729)
Keywords	ニュートリノ / ニュートリノの質量 / ニュートリノ混合 / CPの破れ / Tの破れ / ニュートリノ工場 / 大統一理論 / 超対称性
Research Abstract	私どもの研究は以下の通りである。 1.ニュートリノの質量行列の研究を行った。特に、(a)CPの破れの位相δを予言する模型の構築した。(b)ニュートリノの質量行列を統一理論から提案した。(c)ニュートリノとクオークや荷電レプトンも併せて質量の統一的な理解を得るために、SO(10)大統一理論に基づいて、ニュートリノの質量の行列を構築した。(d)ステライル・ニュートリノの研究を行った。 2.ベータ崩壊や二重ベータとニュートリノ振動実験を総合的に解析し、ニュートリノの混合行列や質量について考察した。 3.レプトン数非保存過程の研究、特に μ^-+(Z, A)→μ^++(Z-2,A)(L_μ非保存) μ^-+(Z, A)→e^++(Z-2,A)(L_e-L_μは保存) の過程の理論的研究を行った。 4.ニュートリノ工場でのCPの破れの位相の検出の可能性を研究した。特に、Tの破れの非対称性の測定は、地球物質の効果が少なく、位相の検出には最も適していることを示した。

Research Products
(16 results)

All Other

All Publications (16 results)

[Publications] Takahiro Miura: "The matter fluctuation effect to T violation at a neutrino factory"Physical Review. D64. 073017 (2001)
[Publications] Takahiro Miura: "The matter effect to T-violation at a neutrino factory"Physical Review. D64. 013002-1 (2001)
[Publications] Takahiro Miura: "Quantum effects for the neutrino mixing matrix in the democratic type model"Progress of Theoretical Physics. 104. 1173-1187 (2000)
[Publications] Takahiro Miura: "Renormalization group effect and a democratic type neutrino mass-matrix"Physical Review. D63. 053006-1 (2001)
[Publications] Takahiro Miura: "Large CP Violation, Large Mixings of Neutrinos and the Z_3 Symmetry"Physical Review. D63. 013001 (2001)
[Publications] Kiko Fukuura: "Large CP Violation, Large Mixings of Neutrinos and Democratic-type Neutrino Mass Matrix"Physical Review. D61. 073002 (2000)
[Publications] K.Matsuda: "How Far Can the SO(10) Two Higgs Model Describe the Observed Neutrino Masses and Mixings ?"Physical Review. D65. 033008 (2002)
[Publications] K.Matsuda: "MNS Parameters from Neutrino Oscillations, Single Beta Decay and Double Beta Decay"Physical Review. D64. 013001 (2001)
[Publications] K.Matsuda: "Graphical Representation of CP Violation Effects in Neutrinoless Double Beta Decay"Physical Review. D63. 077301 (2001)
[Publications] K.Matsuda: "CP Violations in Lepton Number Violation Processes and Neutrino Oscillations"Physical Review. D62. 093001 (2000)
[Publications] K.Matsuda: "SO(10) GUT and Quark-Lepton Mass Matrices"Physical Review. D61. 053001 (2000)
[Publications] D.Suematsu: "The origin of quarks and lepton mixings"Physical Review. D64. 073013 (2001)
[Publications] D.Suematsu: "Neutrino mass due to the mixing among neutrinos and gauginos"Physics Letters. B506. 131 (2001)
[Publications] D.Suematsu: "Neutrino oscillations in a 3ν_L+3ν_R framework with five light neutrinos"Int.J.Mod.Phys.. A15. 3967-3992 (2000)
[Publications] Y.Daikoku: "Mass bound of the lightest neutral Higgs scalar in the extra U(1) models"Physical Review. D62. 095006 (2000)
[Publications] 高杉英一編: "素粒子と原子核を見る"大阪大学出版会. 87 (2001)

2001 Fiscal Year Annual Research Report

ニュートリノの質量行列とCPの破れの研究

Principal Investigator

高杉 英一 大阪大学, 大学院・理学研究科, 教授 (00135633)

Research Products

[Publications] Takahiro Miura: "The matter fluctuation effect to T violation at a neutrino factory"Physical Review. D64. 073017 (2001)

[Publications] Takahiro Miura: "The matter effect to T-violation at a neutrino factory"Physical Review. D64. 013002-1 (2001)

[Publications] Takahiro Miura: "Quantum effects for the neutrino mixing matrix in the democratic type model"Progress of Theoretical Physics. 104. 1173-1187 (2000)

[Publications] Takahiro Miura: "Renormalization group effect and a democratic type neutrino mass-matrix"Physical Review. D63. 053006-1 (2001)

[Publications] Takahiro Miura: "Large CP Violation, Large Mixings of Neutrinos and the Z_3 Symmetry"Physical Review. D63. 013001 (2001)

[Publications] Kiko Fukuura: "Large CP Violation, Large Mixings of Neutrinos and Democratic-type Neutrino Mass Matrix"Physical Review. D61. 073002 (2000)

[Publications] K.Matsuda: "How Far Can the SO(10) Two Higgs Model Describe the Observed Neutrino Masses and Mixings ?"Physical Review. D65. 033008 (2002)

[Publications] K.Matsuda: "MNS Parameters from Neutrino Oscillations, Single Beta Decay and Double Beta Decay"Physical Review. D64. 013001 (2001)

[Publications] K.Matsuda: "Graphical Representation of CP Violation Effects in Neutrinoless Double Beta Decay"Physical Review. D63. 077301 (2001)

[Publications] K.Matsuda: "CP Violations in Lepton Number Violation Processes and Neutrino Oscillations"Physical Review. D62. 093001 (2000)

[Publications] K.Matsuda: "SO(10) GUT and Quark-Lepton Mass Matrices"Physical Review. D61. 053001 (2000)

[Publications] D.Suematsu: "The origin of quarks and lepton mixings"Physical Review. D64. 073013 (2001)

[Publications] D.Suematsu: "Neutrino mass due to the mixing among neutrinos and gauginos"Physics Letters. B506. 131 (2001)

[Publications] D.Suematsu: "Neutrino oscillations in a 3ν_L+3ν_R framework with five light neutrinos"Int.J.Mod.Phys.. A15. 3967-3992 (2000)

[Publications] Y.Daikoku: "Mass bound of the lightest neutral Higgs scalar in the extra U(1) models"Physical Review. D62. 095006 (2000)

[Publications] 高杉英一 編: "素粒子と原子核を見る"大阪大学出版会. 87 (2001)

高杉英一大阪大学, 大学院・理学研究科, 教授 (00135633)

[Publications] 高杉英一編: "素粒子と原子核を見る"大阪大学出版会. 87 (2001)