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arXiv 0802.1230nucl-th
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有限动态QCD介质中的辐射能量损失

Radiative energy loss in a finite dynamical QCD medium

Magdalena Djordjevic, Ulrich W. Heinz

摘要:

在不透明条件下,计算了夸克喷注穿过具有动力学组分的有限尺寸QCD介质时的辐射能量损失。虽然有限尺寸的修正减少了能量损失相对于一个无限的动态QCD介质,在现实条件下,它仍然显着大于静态介质。因此,相对论性重离子碰撞中喷流抑制的定量预测必须考虑介质成分的动力学。有限尺寸效应会导致能量损失与路径长度的非线性依赖关系。我们的结果表明,一个简单的一般映射之间的能量损失表达式的静态和动态QCD介质。

英文摘要:

The radiative energy loss of a quark jet traversing a finite size QCD medium with dynamical constituents is calculated to first order in opacity. Although finite size corrections reduce the energy loss relative to an infinite dynamical QCD medium, under realistic conditions it remains significantly larger than in a static medium. Quantitative predictions of jet suppression in relativistic heavy ion collisions must therefore account for the dynamics of the medium's constituents. Finite size effects are shown to induce a non-linear path length dependence of the energy loss. Our results suggest a simple general mapping between energy loss expressions for static and dynamical QCD media.

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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