报告题目：A self-consistent and covariant  light-front quark model and its applications

时间： 2022年11月12日上午10：00

腾讯会议号：780-761-554

报告人简介：常钦，河南师范大学教授，省特聘教授，博士生导师。2010年毕业于河南师范大学获博士学位；2010-2013在华中师范大学粒子所进行博士后研究；2016–2017在美国斯坦福大学SLAC国家实验室从事访问学者研究。从事粒子物理理论研究工作，主要兴趣集中于重味物理、新物理唯象、微扰QCD计算、光前量子化方法等。入选教育部“长江学者奖励计划”青年学者、河南省杰青，获“全国优秀博士学位论文奖”、河南省青年科技奖等。

摘要：The heavy hadron EW decay plays an important role in testing the Standard Model, searching for the indirect hint of new physics and investigating the feature of hadron. The decay constant, form factor and distribution amplitude are important nonperturbative inputs for evaluating heavy hadron EW decay. The standard light-front (SLF) and the covariant light-front (CLF) quark models provide  conceptually simple and phenomenologically feasible frameworks for calculating these quantities. In this talk, the self-consistence and strict covariance problems of CLF approach are discussed, and a possible solution is tested. Then, based on a self-consistent CLF framework, some rare decays (for instance, semileptonic and nonleptonic decay of heavy vector mesons, B->Tlv and B->K^*_0(1430)M decay, et al.) are investigated.