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Are there multi-quark hadrons?

Dr. Hai-Yang Cheng from Institute of Physics, Academia Sinica
@ Room 104, CCMS-New Physics Building

Abstract:

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, pentaquark baryons and hexaquark states. I will also explain why the quark model often encounters a great challenge in understanding p-wave scalar mesons and p-wave baryons.

 

Brief Bio:

Education

December, 1980 Ph.D. in Physics Purdue University, USA

July, 1973 M.S. in Physics National Tsing Hua University, Taiwan

July, 1971 B.S. in Physics National Cheng Kung University, Taiwan

 

Academic Positions

2012-    

Distinguished Research Fellow, Institute of Physics Academia Sinica

2010  

Visiting Professor, SUNY at Stony Brook

2009-2010

Visiting Professor, Brookhaven National Lab

2001-2002

Visiting Professor, SUNY at Stony Brook

2000-2001

Visiting Professor, Brookhaven National Lab

1992-1993

Visiting Professor, SUNY at Stony Brook

1988-2012 

Full Research Fellow, Institute of Physics Academia Sinic

1987-1988

Visiting Expert, Academia Sinica

1986-1987

Visiting Scientist, Indiana University

1985-1986

Chester Davis Fellow, Indiana University

1983-1985

Research Associate, Brandeis University

1982-1983

Visiting Assistant Professor, Purdue University

1980-1982

Research Associate, Purdue University

 

Professional Experience

6/1984-7/1984, 9/1988-10/1988, 8/1989-1/1990, 8/1991-10/1991, 9/2000-9/2001, 6/2009-5/2010

Research Collaborator, Brookhaven National Laboratory

1990

Organizer of the CP parallel session of the XXVth International Conference on High Energy Physics

1990-2003

Editor, Chinese Journal of Physics

1994-1996

Editor-in-Chief, Chinese Journal of Physics

1994-1996

Physics Panel Committee of Natural Science Division, National Science Council 國科會自然處物理學門審議委員

1994-1995

Project Coordinator, National Science Council 國科會自然處物理學門審議人

1996-1999

Consultation Committee, National Science Council 國科會自然處諮議委員

1998-2000

Chairman of the Taiwan High Energy Experiment Planning Committee

1999-2000

Deputy Director, Institute of Physics, Academia Sinica

 

Honors Received

1980

G. W. Tautfest Memorial Award, Purdue University

1985

Chester Davis Fellowship, Indiana University

1988-1990, 1990-1992, 1992-1994, 1994-1996

Outstanding Research Award of National Science Council 國科會傑出獎

1994

Fellow of Chinese Physical Society 中華民國物理學會會士

1994

Academic Award, Ministry of Education 教育部學術獎

1996-1999, 1999-2002

Special Research Fellow, National Science Council 國科會特約研究員

2004

Citation Award of Chinese Journal of Physics

2010

Outstanding Referee, American Physical Society

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