Theoretical research on experimental methods for exploring CP violation and the origin of matter

本研究的目的是从理论的角度探讨观测CP破坏的实验可能性，CP破坏对于我们宇宙中的物质支配反物质具有重要意义。本文分析了现有基本粒子标准模型之外的新物理对B介子系统CP破坏的影响，B介子的实验为确定标准模型中CP破坏的关键因素Kobayashi-Maskawa矩阵的参数提供了重要信息，即确定了所谓的么正三角形。本文分析了一种新物理学对幺正三角形确定的影响程度。发现在大多数模型中，测得的幺正三角形的三个角之和为180度，只有很小的偏差，小于未来十年所能达到的实验精度。只有当一种新的物理对B夸克衰变有显著影响时，这种偏差才可能很大。作为这种情况的一个例子，我们研究了SU（2）_L*SU（2）_R*U（1）模型.我们发现，即使对于质量约为1 TeV的较重的W_R，CP角的偏差也可能很大。从近期精度的估计出发，指出了哪些测量对CP破坏的进一步研究是重要的。

The aim of this research has been to investigate the experimental possibilities to observe CP violation, which is siginificant for the matter dominance of our universe over anti-matter, from theoretical point of view. We have analyzed the effects of new physics beyond the present standard model of elementary particles on CP violation in B meson system.The experiments on B meson bring us important information to fix the parameters of the Kobayashi-Maskawa matrix, which is a key ingredient of CP violation in the standard model, by determining teh so called unitatity triangle. We have analyzed the extent to whichi the determination of the unitarity triangle is affected under the influence of a new physics in this researchi. It is found that the sum of measured three angles of the unitatity triangle becomes 180 degree in most of the models up to minor deviation which is less than the experimental precision attained in the next decade. The deviation can be large only if a new physics affect siginificantly on b quark decay. As an example of such a case, SU(2)_L*SU(2)_R*U(1) model has been investigated. We found that the deviation of the CP angles can be large even for a relatively heavy W_R with mass of about 1 TeV.It is also poited out that which measurements are important for the further study of CP violation from the estimation of the precision to be attained in the near future.