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arXiv 1606.09535hep-thhep-ph
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AdS/QCD模型中重夸克偶素的热宽度

Thermal width of heavy quarkonia from an AdS/QCD model

Nelson R. F. Braga, Luiz F. Ferreira

摘要:

利用全息AdS/QCD模型计算了强耦合等离子体中重夸克反夸克对的热宽度。产生热宽度的夸克势的虚部出现在引力对偶中,来自视界附近弦世界片的量子涨落。使用软墙背景,涉及红外质量尺度,得到的结果是一致的,与以前的分析,其中质量尺度是通过平均夸克反夸克状态。

英文摘要:

We estimate the thermal width of a heavy quark anti-quark pair inside a strongly coupled plasma using a holographic AdS/QCD model. The imaginary part of the quark potential that produces the thermal width appears in the gravity dual from quantum fluctuations of the string world sheet in the vicinity of the horizon. The results, obtained using a soft wall background that involves an infrared mass scale, are consistent with previous analisys where the mass scale was introduced by averaging over quark anti-quark states.

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