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报告人简介:
李新强，华中师范大学物理科学与技术学院教授，博士生导师;先后入选湖北省楚天学者特聘教授、华中师范大学首届桂子学者和北京大学高能物理中心李政道青年学者。2007年博士毕业于中国科学院理论物理研究所，2008-2009年在德国亚琛工业大学(洪堡学者)、2010-2012年在西班牙瓦伦西亚大学从事博士后研究。2010-2013年在河南师范大学工作，2013年-至今在华中师范大学工作。主要从事重味物理理论和唯象方面的研究，目前已发表学术论文70余篇，总被引3000余次。
报告摘要:
Hadronic B-meson decays play an important role in testing the Kobayashi-Maskawa mechanism of quark-flavor mixing and CP violation. Thanks to the successful running of BaBar, Belle, LHCb and Belle ll experiments, we are now entering an era of precision flavor physics. In this talk, l will review the status of NNLO perturbative OCD corrections to two-body hadronic B meson decays in the framework of QCD factorization approach, or its field. theoretical formulation within the soft-collinear effective theory. After introducing the theoretical framework for hadronic B-meson decays, l will present the calculations of these higher-order perturbative QCD corrections, firstly to the tree and then to the leading-power QCD penguin amplitudes. With these NNLO corrections included, phenomenological analyses of the tree- and penguin-dominated two-body charmless B-meson decays, as well as the class-B-meson decays into heavy-light final states are given Possible higher-order power corrections motivated by the current data will also be discussed.