夸克质量起源、味混合结构与CP对称性破坏的理论研究

倘若2012年在大型强子对撞机上所发现的新粒子最终被确认是希格斯玻色子，那对标准模型的质量起源机制将是一个强有力的支持。但是味物理学的若干基本问题，例如夸克质量的强烈等级性、味混合矩阵的特殊结构、CP对称性在弱相互作用和强相互作用中的破坏等问题，依然没有答案。我们将利用最新的实验数据，基于味对称性及其破缺机制，对这些重要课题开展进一步的研究，力图发现夸克质量、味混合与CP破坏之间不平庸而且可检验的动力学关联性。同时把夸克与轻子的味结构问题结合起来，在统一的理论框架内研究它们的基本性质及其与宇宙的物质-反物质不对称的可能联系。我们的研究将有益于下一阶段的精确味物理实验，并有助于建立超越标准模型的味动力学。

If the new particle discovered in 2012 at the Large Hadron Collider is eventually confirmed to be the Higgs boson, it will be a strong support to the mechanism of mass generation in the Standard Model. But a number of fundamental problems in flavor physics, such as the strong hierarchy of quark masses, the salient structures of flavor mixing and CP violation in weak and strong interactions, remain unsolved. We shall carry out a further study of these important topics with the help of the latest experimental data and on the basis of some proper flavor symmetries and their breaking mechanisms, in order to establish some nontrivial, testable and dynamical relations between quark masses and parameters of flavor mixing and CP violation. In the meantime, we shall investigate the properties of quarks and leptons and their possible relations with the cosmological matter-antimatter asymmetry in a unified theoretical framework. Our study will be useful for the future precision experiments of flavor physics, and helpful for pinning down the flavor dynamics beyond the Standard Model.