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夸克-胶子等离子体中的喷注-光子转换机制
Jet-photon Conversion in Expanding Quark-gluon Plasma
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摘要: 提出了一种夸克-胶子等离子体中的喷注-光子转换机制.对于热光子而言,在热夸克-胶子媒介中的喷注-光子转换是一个非常重要的热光子来源.喷注可以通过次级康普顿散射和湮灭过程来实现喷注-光子转换.此外,还考虑了在快光子产生过程中起重要修正作用的胶子-光子贡献,其中,核遮蔽效应和同位旋效应也被引入到了部分子模型中.Abstract: We develop a jet-photon conversion mechanism in the expanding quark-gluon plasma.The jet-photon conversion in hot quark-gluon medium is a vital source of the thermal photon production.The jet converts into photons via the secondary Compton and annihilation processes in the quark-gluon plasma.The gluon-photons are also considered in the calculation of prompt photons which includes the effect of the shadowing and isospin of nucleus.We find that the prompt gluonphotons are also an important modification to prompt photons.
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