报告人：施瑀基

   德国波恩大学博士后研究员

时间： 2021年4月13日（周二）上午 11：00-12:00

地点： 行健楼437会议室

报告摘要：

The study of multi-meson systems is an interesting problem as they are universal in various physical processes. To analyze such process one should consider the effect of the low-energy interaction of the final mesons, which is generally described by the two-meson form factors. We present a comprehensive analysis of the two-meson form factors induced by scalar, vector, and tensor quark operators. The theoretical framework is based on a combination of unitarized chiral perturbation theory (uChPT) and dispersion relations. The low-energy constants in chiral perturbation theory are fixed by a global fit to the available data of the two-meson scattering phase shifts. Each form factor derived from uChPT is improved by iteratively applying a dispersion relation. This study updates the existing results in the literature and explores those that have not been systematically studied previously, in particular the two-meson tensor form factors. Some applications of these form factors are also introduced in this work.

报告人简介：

Dr. Shi Yuji，a postdoctoral at the University of Bonn. Received a bachelor's degree from Shanghai Jiaotong University in 2014, and a Ph.D. from Shanghai Jiaotong University in 2019. The main areas of specialization is Heavy flavor physics; Hadron physics; QCD, and the research interests are primarily in heavy flavor physics and hadron physics, especially the studies of bottom or charm hadron decays with non-perturbative approaches

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Seminar  Announcement

There will be a seminar this Tuesday Morning. The information is as follows:  

Welcome to attend this seminar in K2-437 !

Best Wishes!

The Department of Physics and Institute of Theoretical Physics, NJNU

2021-4-9