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Emergence of near-threshold structures in heavy hadron spectrum
by
Prof.郭奉坤
(中国科学院理论物理研究所)
→
Asia/Shanghai
Room 319, TPD, IHEP（高能所图书馆319）
Room 319, TPD, IHEP（高能所图书馆319）
Description
报告摘要：Tremendous progress has been made experimentally in the hadron spectrum containing heavy quarks in the last two decades. It is surprising that many resonant structures are around thresholds of a pair of heavy hadrons. By constructing a nonrelativistic effective field theory with open channels, I will show that nontrivial near-threshold structures can show up as only for channels with attractive interaction, and the structure is more poronounced for heavier hadrons. Then, I will discuss the predictions of an overall hadronic molecular spectrum using a simple model and the relations with some experimental observations.
个人简介：郭奉坤，中国科学院理论物理研究所研究员。1998-2002年就读于山东大学物理学院，2007年在中科院高能物理研究所获得博士学位，随后在德国于利希研究中心以及波恩大学从事博士后研究工作，2015年加入理论物理研究所。曾担任 Chiral Dynamics, PhiPsi, HADRON 等国际会议的国际顾问委员会委员，PANDA 实验理论顾问组成员。2021获国家杰出青年基金支持。主要从事强子谱、有效场论等方面的研究工作。发表文章百余篇，含PRL 13 篇, RMP 和 PPNP 特邀综述各1篇。近年来主要进展包括：揭示重强子谱中近阈结构的普遍规律；提出利用三角奇点精确测量近阈粒子束缚能的方法；与合作者系统发展了重轻介子低能散射的理论，对正宇称粲介子的数个疑难同时给出自然的解释；提出存在带电的DD*组成的 X 原子，并建议通过其研究X(3872) 的结构与产生机制等。
腾讯会议ID：917 8905 3861
