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Meng, Q; Wu, Q; Cheng, P; Ping, JL; Zong, HS
Calculation of dissociation temperature of quarkonium using Gaussian Expansion Method
发表期刊CHINESE PHYSICS C
语种英语
关键词DECONFINEMENT TRANSITION SYSTEMS LATTICE QCD
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.
2018
ISSN1674-1137
卷号42期号:8页码:83103
学科领域Physics
学科门类Physics, Nuclear ; Physics, Particles & Fields
DOI10.1088/1674-1137/42/8/083103
收录类别SCIE
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22847
专题理论物理所科研产出_SCI论文
作者单位1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China
3.Joint Ctr Particle, Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
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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.
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