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arXiv 1012.1811hep-ph
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pQCD-based部分子输运模型中的喷流和流动

Jets and flow within a pQCD-based partonic transport model

Oliver Fochler, Zhe Xu, Carsten Greiner

摘要:

在微扰QCD部分子输运模型BAMPS中,我们对RHIC能区的重离子碰撞进行了全动力学模拟,重点研究了喷注猝灭和椭圆流的同时发生。该模型始终具有弹性和非弹性2 -> 3过程,后者是基于Gunion-Bertsch矩阵元素。我们讨论了第一次尝试扩展模型,包括轻夸克的自由度和研究的能量损失的高能胶子和夸克在静态部分子介质。胶子和夸克在非弹性过程中的差异被发现是弱于预期的颜色因素,由于自猝灭效应与截断建模LPM效应。

英文摘要:

We present fully dynamic simulations of heavy ion collisions at RHIC energies within the perturbative QCD-based partonic transport model BAMPS, focusing on the simultaneous investigation of jet-quenching and elliptic flow. The model consistently features elastic and inelastic 2 -> 3 processes, the latter being based on the Gunion-Bertsch matrix element. We discuss first attempts to extend the model to include light quark degrees of freedom and study the energy loss of high energy gluons and quarks in a static partonic medium. The difference between gluons and quarks in inelastic processes is found to be weaker than expected from color factors, due to a self-quenching effect associated with a cut-off modeling the LPM effect.

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