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arXiv 1105.4288nucl-th
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动态QCD介质中磁和电对能量损失的贡献

Magnetic and electric contributions to the energy loss in a dynamical QCD medium

Magdalena Djordjevic

摘要:

计算具有动力学组分的有限尺寸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的可靠预言的关键。以前的研究表明,与静态QCD介质相比,动态QCD介质中的能量损失明显更高。为了理解这种差异,我们在这里分析了磁和电对动力学QCD介质中能量损失的贡献。我们发现,显着较高的能量损失的动力学情况下,完全是由于外观的动态介质中的磁贡献。而对于渐近高能量,静态和动态介质中的能量损失接近相同的值,我们发现这两种情况下的能量损失的物理根源是不同的。

英文摘要:

The computation of radiative energy loss in a finite size QCD medium with dynamical constituents is a key ingredient for obtaining reliable predictions for jet quenching in ultra-relativistic heavy ion collisions. It was previously shown that energy loss in dynamical QCD medium is significantly higher compared to static QCD medium. To understand this difference, we here analyze magnetic and electric contributions to energy loss in dynamical QCD medium. We find that the significantly higher energy loss in the dynamical case is entirely due to appearance of magnetic contribution in the dynamical medium. While for asymptotically high energies, the energy loss in static and dynamical medium approach the same value, we find that the physical origin of the energy loss in these two cases is different.

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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