Nuclear and Particle Physics Colloquium68(核与粒子物理学术报告会68)
Place:Room 316, Main Building, Beihang University
Time:9:00-11:00, December 2nd, 2018
Title:Gaussian expansion method and its application in multi-quark systems
Speaker:Dr. Gang Yang, Tsinghua University
During the past few decades, a precision numerical calculation approach, Gaussian expansion method (GEM), had been widely used in investigating on few-body systems which were related to hadron physics, nuclear physics, cold atom systems etc. In this talk, firstly, the general concept of GEM will be introduced. Then a simple application in 3-quark baryons whose eigen-energy are obtained by solving the？？？？h？？？？？？？？？？？？？？？？equation with variational method will be discussed. Thirdly, based on the two hidden-charmonium pentaquark states which had already been announced by the LHCb collaboration in 2015, a brief review on the theoretical explanations to the hidden-charmonium and -bottonium pentaquark states by means of GEM in chiral quark model will be presented.
Dr. Gang Yang obtained his Ph. D. degree from Nanjing Normal University in 2017. He is now a postdoctoral research fellow in Tsinghua University. His main research interests include multi-quark systems, exotic hadron states and hadronic spectrum.