讲座主题：Phenomenological studies on searching for long-lived particles with displaced vertices and jets at the LHC

专家姓名：王泽人（Zeren Simon Wang）

工作单位：合肥工业大学

讲座时间：2025年05月14日 10:30-12:00

讲座地点：莱山区祥隆中心A座4楼

主办单位：强乱强乱中文字幕物理与电子信息学院

内容摘要：

Searching for long-lived particles has become an important research direction in the quest for physics beyond the Standard Model, e.g. the LHC experiments have reported multiple such searches. In the first part of this talk, I will discuss how to recast a recent ATLAS search for displaced vertices plus jets and reinterpret the obtained bounds in terms of an axion-like particle with quark flavor violation and various benchmark scenarios of dark scalars. In the second part, I will focus on long-lived heavy neutral leptons (HNLs) from top-quark decays in the theoretical framework of sterile-neutrino-extended Standard Model Effective Field Theory, showing why the ATLAS DV+jets search fails in this case and how we may modify the search to constrain the scenario. The sensitivity reach of proposed LHC far detectors to such HNLs will also be discussed.

主讲人介绍：

Zeren Simon Wang is an associate researcher at the School of Physics, Hefei University of Technology. Previously he worked as a postdoctoral researcher at the Asia Pacific Center for Theoretical Physics and at the Department of Physics, Taiwan Tsing Hua University. He obtained Ph.D. at the University of Bonn. He has published more than 40 research papers in journals including JHEP, PRD, and EPJC, and served as a referee for these and other journals.