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arXiv 1504.06356hep-phnucl-th
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射流淬火参数的小$x$演变

Small-$x$ evolution of jet quenching parameter

Raktim Abir

摘要:

本文利用D'Eramo,Liu和Rajagopal最近提出的强相互作用介质中部分子横向偏转几率的概念,导出了随机多重散射区中喷注猝灭参量的高能演化方程。喷流猝灭参数${\hat q}(x)$似乎随$x$而演化,其指数$0.9{\bar α}_s$略小于$x {\cal G} (x)$,其中${\cal G} (x)$是胶子分布函数。

英文摘要:

Concept of transverse deflection probability of a parton that travels through strongly interacting medium, recently introduced by D'Eramo, Liu and Rajagopal, have been used to derive high energy evolution equation for the jet quenching parameter in stochastic multiple scatterings regime. Jet quenching parameter, ${\hat q}(x)$, appears to evolve with $x$, with an exponent $0.9{\bar α}_s$, which is slightly less than that of $x {\cal G} (x)$ where ${\cal G} (x)$ is the gluon distribution function.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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