Search for the relation between the CP violation phases appearing in neutrino oscillation and leptogenesis

在这个项目中，我研究了中微子的结构，它产生于跷跷板机制，在低和高能量的各种现象。我们考虑了超对称统一理论中的中微子振荡、轻子数破缺过程（如无中微子双β衰变和μ介子俘获）和轻子数破缺过程（如超对称统一理论中的轻子生成和有效相互作用）。为了讨论这些现象，我们使用了重整化群分析及其解析解。通过对高能中微子混合方案的假设，分析了各种现象，表明该模型很好地再现了实验数据，并给出了各种预言，特别是对13元中微子混合矩阵和Dirac CP相的预言。2.我们研究了Majorana CP相位对轻子味破坏过程的影响，发现这种影响是相当重要的。3.系统地研究了轻子数破坏过程及其在当前和未来实验中的可能性。4.线性对撞机产生的Higgs粒子衰变中的轻子味破坏。5.提出了暗能量的起源并论证了其存在的可能性。

In this project, I investigated the structure of neutrino masse which arises from the see-saw mechanism, in view of various phenomena in the low and high energies. We considered that in the low energy the neutrino oscillation, the lepton number violating processes such as the neutrinoless double beta decay and the mu-meson capture, and in the high energy the leptogenesis and the effective interaction which arises in the supersymmetric unified theory. To discuss these phenomena, we used the renormalization group analysis and its analytic solution.In particular, 1. we analyzed various phenomena by assuming the special neutrino mixing scheme at high energy and showed that this model reproduced the experimental data well and gave various predictions especially about 13 element of neutrino mixing matrix and the Dirac CP phase. 2. We investigated the effect of Majorana CP phases on the lepton flavor violation processes and found that the effect is quite important. 3. Various lepton number violating processes and their possibility to be investigated experimentally in the present and the near future experiment, are investigated systematically. 4. The lepton flavor violation in the decay of Higgs particles which are produced in the Linear Collider. 5. The origin of the dark energy is proposed and its possibility is argued.