Calculation of dissociation temperature of quarkonium using Gaussian Expansion Method

doi:10.1088/1674-1137/42/8/083103

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	Calculation of dissociation temperature of quarkonium using Gaussian Expansion Method
	Meng, Q ; Wu, Q ; Cheng, P ; Ping, JL ; Zong, HS
刊名	CHINESE PHYSICS C
	2018
卷号	42 期号:8 页码:83103
关键词	DECONFINEMENT TRANSITION SYSTEMS LATTICE QCD
ISSN号	1674-1137
DOI	10.1088/1674-1137/42/8/083103
英文摘要	The dissociation temperatures of quarkonium states in a thermal medium are obtained in the framework of the quark model with the help of the Gaussian Expansion Method (GEM). This is the first time this method has been applied to the dissociation problem of mesons. The temperature-dependent potential is obtained by fitting the lattice results. Solving the Schrodinger equation with the GEM, the binding energies and corresponding wave functions of the ground states and the excited states are obtained at the same time. The accuracy and efficiency of the GEM provide a great advantage for the dissociation problem of mesons. The results show that the ground states 1(1)S(0) and 1(3)S(1) have much higher dissociation temperatures than other states, and the spin-dependent interaction has a significant effect on the dissociation temperatures of 1(3)S(1) and 1(1)S(0). We also suggest using the radius of the bound state as a criterion of quarkonium dissociation. This can help to avoid the inaccuracy caused by the long tail of quarkonium binding energy dependence on temperature.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22847]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Joint Ctr Particle, Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 4.Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Meng, Q,Wu, Q,Cheng, P,et al. Calculation of dissociation temperature of quarkonium using Gaussian Expansion Method[J]. CHINESE PHYSICS C,2018,42(8):83103.
APA	Meng, Q,Wu, Q,Cheng, P,Ping, JL,&Zong, HS.(2018).Calculation of dissociation temperature of quarkonium using Gaussian Expansion Method.CHINESE PHYSICS C,42(8),83103.
MLA	Meng, Q,et al."Calculation of dissociation temperature of quarkonium using Gaussian Expansion Method".CHINESE PHYSICS C 42.8(2018):83103.