| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Thermal Width for Heavy Quarkonium in the Static Limit |
| SHI Chao-Yi, ZHU Jia-Qing, MA Zhi-Lei, LI Yun-De** |
| Department of Physics, Yunnan University, Kunming 650091 |
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| Cite this article: |
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SHI Chao-Yi, ZHU Jia-Qing, MA Zhi-Lei et al 2015 Chin. Phys. Lett. 32 121201 |
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Abstract The thermal widths for heavy quarkonia are calculated for both Coulomb gauge (CG) and Feynman gauge (FG), and the comparisons between these results with the hard thermal loop (HTL) approximation ones are illustrated. The dissociation temperatures of heavy quarkonia in thermal medium are also discussed for CG, FG and HTL cases. It is shown that the thermal widths, derived from the HTL approximation and used in many research studies, cause some errors in the practical calculations at the temperature range accessible in the present experiment, and the problem of gauge dependence cannot be avoided when the complete self energy is used in the derivation of potential.
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Received: 03 September 2015
Published: 05 January 2016
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