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. |
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