Particle physics is the subject of science, which research the structure, the properties of particles at high energy, the interaction, the phenomenon of mutual transformation between them, and how bring about these phenomena and laws of the discipline. Considering the particles at high-speed need high energy to accelerate, so particle physics is also known as high-energy physics. In recent years, with some large detector(LHC, BES) put into use, these instruments will not only bring us numerous experimental data, but also to the benefit of discovering new physics.Firstly, I give a study of reviewing the history of particle physics, introduce relevant theoretical knowledge of particle physics, and focus on new progress of the particle physics in experiment.Secondly, we introduce the standard model, chiral symmetry, heavy quark effective theory, consitiute quarks meson model and other theories together. These theories are very important to the calculation in our study. At the same time, they are specific tools for us to the research.Finally, we focus on some new discovery mesons, we study the radioactive decays of DS1 (2526) and the strong decays of D*S1 (2710); after complicated calculations, we abtained the numerical result of them in the framework of the CQM Model. These results are reasonable under qualitative analysis, but there is no experimental result. So we look forward to the patical group to bring us more information about them.This paper studies some charm-strange mesons only. There are many things need us to further rearch. The new discoveries in experiment and the further development of computer science will promote the rapid development to theoretical physics. |