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arXiv 0907.4379nucl-th
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QCD介质中射流能量损失的动力学效应

Dynamical Effects on Jet Energy Loss in a QCD Medium

Magdalena Djordjevic

摘要:

计算有限尺寸动态屏蔽QCD介质中的辐射能量损失是获得超相对论重离子碰撞中喷注猝灭可靠预言的关键。我们发展了一个理论,它允许计算,一阶的散射中心的数量,通过有限大小的动态QCD介质的重夸克旅行的能量损失。我们表明,动态介质的结果是显着大于随机分布的静态散射中心组成的介质。因此,在RHIC和LHC实验中对喷流抑制的定量描述必须正确地考虑介质成分的动力学。此外,定性预测,来自这种能量损失形式主义也提出。

英文摘要:

Computation of radiative energy loss in a finite size dynamically screened QCD medium is a key ingredient for obtaining reliable predictions for jet quenching in ultra-relativistic heavy ion collisions. We develop a theory which allows calculating, to first order in the number of scattering centers, the energy loss of a heavy quark traveling through a finite size dynamical QCD medium. We show that the result for a dynamical medium is significantly larger compared to a medium consisting of randomly distributed static scattering centers. Therefore, a quantitative description of jet suppression at RHIC and LHC experiments must correctly account for the dynamics of the medium's constituents. Furthermore, qualitative predictions that come from this energy loss formalism are also presented.

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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