Abstract:

The electric charge is quantized in the standard model. However, particles with non-quantized electric charge, often referred to as millicharged particles, exist in a variety of new physics models beyond the standard model. In this talk, I will discuss the theoretical models in which millicharged particles can naturally occur, and the experimental searching methods. Although a number of terrestrial searches have been carried out for millicharged particles, significant millicharge is still allowed for mass larger than 100 MeV. We found that electron colliders, e.g. BESIII or Belle-II, can probe these unexplored parameter regions above 100 MeV.

About the speaker:

刘佐伟博士于2003年复旦大学本科毕业，2008年美国东公司学博士毕业，2008-2011年在纽约州立大学石溪分校做博士后研究，2011-2014年在加拿大麦吉尔大学做博士后研究，2014-2016年在清华大学任副研究员，2016年至今在南京大学任教授。2014年入选海外高层次青年人才。主要研究领域是粒子物理理论。长期从事暗物质的理论和唯象学研究，以及粒子对撞机上超出标准模型的新物理研究。