Abstract:

Recently, the LHCb collaboration observed the CP violation in charm decays for the first time, in the Cabibbo-suppressed processes of D0->K+K- and pi+pi-. The observed value of CPV is consistent with the theoretical prediction in 2012. We will interpret it in the Standard Model and its implications in the future measurements at Belle II and LHCb. In addition, we find a new CP-violation effect in the Cabibbo-favored charm decays into neutral kaons. This effect, estimated to be of an order of 10−3, is much larger than the direct CP asymmetries in these decays, but missed in the literature. It can be revealed by measuring the difference of the CP asymmetries in the D+→ π+KS and Ds+ → K+KS modes, which are accessible at the LHCb and Belle II experiments.

于福升，2008年至2013年就读于中国科学院高能物理研究所并获理学博士学位，2011至2012年在巴黎第十一大学作联合培养博士生，2013年至今为兰州大学核科学与技术学院副教授、教授。从事粒子物理理论方面的研究工作，包括重味物理相关的唯象学、精确检验标准模型和寻找超出标准模型的新物理。预言了寻找双重味重子的最佳探测过程，建议和引导LHCb实验首次探测到双粲重子，该发现入选“2017年度中国科学十大进展”。到目前在Phys.Rev.Lett, Phys.Rev.D, JHEP, Eur.Phy.J.C等国际主流期刊发表十余篇学术论文。十余次应邀在国际国内重要学术会议上做大会报告。