标题： 强耦合Quark-Gluon Plasma中leading order轨迹函数 显示英文标题

标题： Leading order track functions in a hot and dense QGP

摘要： 我们研究了部分子碎裂成带电粒子的碎裂图样在热密夸克胶子等离子体存在下的修正。为此，我们分析了描述带电强子所携带能量分数的轨迹函数的微扰重整化群方程。聚焦于纯杨-米尔斯理论，我们计算了介质修正轨迹函数的最低阶矩，发现它们对介质中发射的相空间缩减和能量损失敏感。我们利用提取出的矩在 collinear 极限下计算了轨迹上的能量-能量关联（EEC）。尽管介质演化轨迹上的 EEC 对颜色去相干转变敏感，并且由于淬火而抑制分布，但与真空中轨迹上的 EEC 相比，在定性上没有差异。 显示英文摘要

摘要： We study the modifications to the fragmentation pattern of partons into charged particles in the presence of a hot and dense Quark Gluon Plasma. To this end, we analyze the perturbative renormalization group equations of the track functions, which describe the energy fraction carried by charged hadrons. Focusing on pure Yang-Mills theory, we compute the lowest order moments of the medium-modified track functions, which are found to be sensitive to the reduced phase space for emissions in the medium and to energy loss. We use the extracted moments to calculate the Energy Energy Correlator (EEC) on tracks in the collinear limit. The EEC on medium-evolved tracks does not differ qualitatively from the EEC on vacuum tracks despite being sensitive to the color decoherence transition and suppressing the distribution due to quenching, as seen in other jet observables.