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arXiv 2009.00561nucl-th
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热介质中重夸克的能量损失与能量增益

Energy Loss Versus Energy Gain of Heavy Quarks in a Hot Medium

Mohammad Yousuf Jamal, Santosh K. Das, Marco Ruggieri

摘要:

研究了热介质中重夸克的能量损失和能量获得。这些包括由于极化和与介质的热波动的相互作用而引起的能量变化的研究。重夸克与介质的动力学由Wong方程描述,该方程允许包含由于介质的极化而引起的重夸克上的逆反应以及与胶子场的热涨落的相互作用。研究了粲夸克和底夸克的能量损失和增益随动量和温度的变化。我们发现,在高能碰撞的早期阶段,重夸克的能量增益在高温区域的能量损失中占主导地位。这一发现支持了最近在RHIC和LHC中观测到的重夸克结果,并将对RHIC和LHC能量下的重夸克观测值产生重大影响。

英文摘要:

We study the energy loss and the energy gain of heavy quarks in a hot thermal medium. These include the study of the energy change due to the polarization and to the interaction with the thermal fluctuations of the medium. The dynamics of the heavy quarks with the medium is described by the Wong equations, that allow for the inclusion of both the backreaction on the heavy quarks due to the polarization of the medium, and of the interaction with the thermal fluctuations of the gluon field. Both the momentum as well as the temperature dependence of the energy loss and gain of charm and bottom quark are studied. We find that heavy quark energy gain dominate the energy loss at high-temperature domain achievable at the early stage of the high energy collisions. This finding supports the recently observed heavy quarks results in Glasma and will have a significant impact on heavy quark observables at RHIC and LHC energies.

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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