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恒元物理学讲座(第105期): Are there multi-quark hadrons?

发布时间:2018-03-21 浏览:

报告题目:恒元物理学讲座(第105期): Are there multi-quark hadrons?

人:郑海扬 特聘研究员(台湾中央研究院物理所)

报告时间: 16:00

报告地点:长安校区 物理学与信息技术学院六层学术报告厅(致知楼3623

主办单位:物理学与信息技术学院

报告人简介:

郑海扬教授,台湾中央研究院特聘研院员。1980年美国普渡大学 (Purdue University)博士,80年代中期先后在Brandeis University, Indiana University 等地展开研究工作。 1988年任台湾中央研究院物理所研究员,2012年至今任特聘研究员。郑教授常年与SUNY at Stony Brook, Brookhaven National Lab有合作访问关系。郑教授曾组织 25届国际高能会议 XXV ICHEP1990)的CP 分会;担任 Chinese Journal of Physics 编辑、主编;担任台湾国科会自然处物理学门审议委员、台湾国科会自然处咨议委员;曾担任台湾高能实验筹委会主席;中研院物理所副所长。郑教授获得的荣誉有G.W. Tautfest Memorial Award (Purdue University), Chester Davis Fellowship (Indiana University), 获国科会杰出奖(多次),台湾物理学会会士,APS 杰出审稿人等。

报告摘要:

The quark model has been applied very successfully in describing the mesons and baryons and their properties. It is known that all the established mesons are made of a quark and an antiquark, while baryons are composed of three quarks. In principle, hadrons composed with more than three valence quarks are not prohibited by the fundamental theory of strong interactions, namely the so-called QCD. In this talk I'll examine the status of the multi-quark hadrons, including tetraquark mesons, pentquark baryons and hexaquark mesons. We also explain why the quark model often encounters a great challenge in understanding scalar mesons.