报告题目：Time-dependent CP violation measurements at LHCb

报告时间：2023年12月22日(周五)  15:00-17:00
报告地点：主校区物理学院A楼503会议室

报告内容：CP violation in the decays of neutral B mesons can be attributed to the interference between decay amplitudes with and without mixing, resulting in a measurable CP-violating phase, β(s). Precise measurements of the mixing phases of neutral B mesons are of paramount importance in validating the CP violation paradigm within the Standard Model and exploring potential new physics beyond it. Tree-level b->c\bar{c}q transitions offer golden modes for these measurements, allowing for clean and precise determinations. Additionally, measuring mixing phases in modes influenced by penguin diagrams provides a means to probe new physics contributions in loop processes. In this presentation, I will introduce the latest time-dependent measurements of B0 and Bs mixing phases conducted at LHCb, showcasing the most precise results to date. These results significantly advance our understanding of CP violation and pave the way for potential discoveries of new physics phenomena.

报告人介绍：李佩莲博士，欧洲核子研究中心research fellow，也是LHCb合作组B物理到粲偶素及非粲衰变物理组负责人，国家海外青年人才获得者。2019年毕业于中国科学技术大学，获得粒子物理博士学位，主要在北京谱仪III上开展粲重子衰变及奇特态粒子研究和开发中性径迹飞行时间重建算法。随后加入德国海德堡大学，基于LHCb实验从事CP破缺精确测量及在线实时分析软件触发算法的开发及重建效率的刻度。