题   目：Threshold effects as the origin of some exotic phenomena

报告人：刘晓海  特聘研究员（天津大学）

时    间：2025年09月27日 星期六上午10:30

地    点：理工楼1226

联系人：罗肆强、王福来

报告摘要：

Many XYZ states lie near hadron-pair thresholds, prompting their interpretation as hadronic molecules. Alternatively, some non-resonance interpretations were also proposed due to the near-threshold phenomena, such as the threshold cusp or triangle singularity (TS) mechanism. These kinematic effects can produce resonance-like peaks in invariant mass spectra, complicating the identification of exotic states. It is therefore essential to evaluate such possibilities before attributing a peak to a true particle. In this presentation, we will explore the potential connections between threshold effects and various exotic phenomena.

个人简介：

刘晓海博士，2006年本科毕业于南开大学，2011年博士毕业于中国科学院高能物理研究所，之后先后在德国波鸿鲁尔大学、北京大学、日本东京工业大学（JSPS）、德国于利希研究中心等地做博士后工作，2018年入职天津大学理学院物理系。主要研究方向为强子谱学和低能强相互作用理论，近年来的工作重点集中在奇特强子态与阈值效应的研究。