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恒元物理學(xué)講座(第105期): Are there multi-quark hadrons?

發(fā)布時間:2018-03-21 瀏覽:次

報告題目:恒元物理學(xué)講座(第105期): Are there multi-quark hadrons?

人:鄭海揚 特聘研究員(臺灣中央研究院物理所)

報告時間: 16:00

報告地點:長安校區(qū) 物理學(xué)與信息技術(shù)學(xué)院六層學(xué)術(shù)報告廳(致知樓3623

主辦單位:物理學(xué)與信息技術(shù)學(xué)院

報告人簡介:

鄭海揚教授,臺灣中央研究院特聘研院員,。1980年美國普渡大學(xué) (Purdue University)博士,,80年代中期先后在Brandeis University, Indiana University 等地展開研究工作。 1988年任臺灣中央研究院物理所研究員,,2012年至今任特聘研究員,。鄭教授常年與SUNY at Stony Brook, Brookhaven National Lab有合作訪問關(guān)系,。鄭教授曾組織 25屆國際高能會議 XXV ICHEP,,1990)的CP 分會;擔(dān)任 Chinese Journal of Physics 編輯,、主編,;擔(dān)任臺灣國科會自然處物理學(xué)門審議委員、臺灣國科會自然處咨議委員,;曾擔(dān)任臺灣高能實驗籌委會主席,;中研院物理所副所長。鄭教授獲得的榮譽有G.W. Tautfest Memorial Award (Purdue University), Chester Davis Fellowship (Indiana University), 獲國科會杰出獎(多次),臺灣物理學(xué)會會士,,APS 杰出審稿人等,。

報告摘要:

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.