重味夸克衰变中的标准模型检验与新物理探寻

自希格斯粒子发现后，为了寻找超出标准模型的新物理理论，高能物理沿着高能量的直接发现与高亮度精确测量两个方向前进。以研究b夸克为主的重味物理通过精确检验标准模型为寻找新物理信号、揭示CP破坏来源提供了重要的平台。本项目将结合来自B介子工厂、LHCb、Belle-II以及BEPC等实验结果，选择几个热点问题进行研究。在现有工作的基础上，我们希望（1）计算末态含有两个介子的半轻衰变；（2）系统计算B介子三体非轻衰变；（3）在PQCD和QCDF基础上，结合最新数据采用全局拟合方法对B-->PP,PV,VV, SP,SV,AV进行分析；(4)寻找对新物理敏感的可观测量，限制和检验新物理模型；（5）在重味物理中研究Higgs的性质；（6）在重味物理中研究暗物质性质。希望上述理论结果为高能物理实验数据分析提供理论支持，为通过高亮度的重味物理实验发现新物理存在的信号或证据提供理论支持。

After the discovery of the Higgs boson, in order to search for the new physics beyond the standard model, high energy physics is developed along with the two directions, the high energy and the high luminosity. The heavy flavour physics provides us an important plat for testing the standard model, searching for the signals of new physics and uncovering the resource of CP violation. In this project, we will combine the data from LHCb and Belle-II, and will study following topics: (1) studying the semi-leptonic decays of B meson with two mesons in the final states; (2) calculating three body decays of B meson; (3) calculating B-->PP, PV, VV, SP, SV, AV decays with the global fit approach; (4) searching for the new physics in B/Bs meson rare decays; (5) studying the characters of Higgs boson in heavy flavour physics; (6) probing the signals of dark matter in heavy flavour decays. The above results provide the essential theoretical support for the precision test of the SM and the efforts of searching for the signals or evidences of the new physics beyond the SM.