第二十三届HAPOF论坛，Hunting for Physics beyond the Standard Model in Beta Decays，成千业 博士，2021年05月14日

Friday 14 May 2021, 15:00 → 16:30 Asia/Shanghai

报告人：成千业 博士 (波恩大学）
报告时间：2021年05月14日 15：00 - 16：30

腾讯会议：https://meeting.tencent.com/pmi-detail.html?pmi_code=6733913824

摘要：
The failure of the Standard Model (SM) of particle physics to explain many important observed phenomena in cosmology calls for the search of physics beyond the Standard Model (BSM) from experiments. However, despite decade-long world-wide efforts, nothing new was found in high energy particle experiments. Smaller-scale experiments at the precision frontier have thus become increasingly important not only due to their cost-effectiveness, but also the high discovery potential. 

Over the past three years, several significant anomalies have been observed in the beta decay of mesons, nucleon and nuclei, in particular the apparent violation of the Cabibbo-Kobayashi-Maskawa (CKM) matrix unitarity. They have attracted great attentions and turned beta decays into one of the most promising avenues for the search of BSM physics. However, the current significant level of the observed anomalies is not yet sufficient to declare a discovery, and the major limiting factor is the precision level of the SM theory inputs instead of experiments. 

In this talk I will describe the major theory improvements needed to increase the significance level of the existing beta decay anomalies to 5 standard deviations, assuming that BSM physics is the underlying reason. They include high-precision studies of radiative corrections, isospin-breaking corrections and nuclear structure corrections to various beta decay processes. 

报告人简介：
成千业 (Chien-Yeah Seng)
2004-2008 清华大学本科；2008-2010 香港科技大学 硕士
2010-2016先后于University of Wisconsin-Madison 和 University of Massachusetts Amherst 攻读博士学位 (2013年随导师转至 UMass Amherst)
2017-2018 上海交通大学 博士后
2018-迄今 波恩大学 洪堡学者、博士后

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