能量-能量关联函数与颜色退相干：来自生成泛函的方法
Energy-energy correlators and color decoherence from a generating functional
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中文总结 AI 辅助
本文提出一种生成泛函方法，在喷注演算框架下描述穿过夸克-胶子等离子体的喷注，推导出耦合演化方程，结合能量-能量关联函数与核修正因子，以约束喷注能量损失及颜色退相干。
中文摘要 AI 辅助
利用前导对数精度下的喷注演算，我们发展了一种生成泛函方法来描述穿过夸克-胶子等离子体的喷注的硬共线扇区。该框架为喷注核修正因子和能量-能量关联函数（EECs）导出了耦合演化方程。我们首先在全非相干区间构造EEC演化，然后在大$N_c$极限下推导出考虑从相干到非相干极限过渡的演化方程。此外，我们表明将EEC与喷注核修正因子结合，可对整体喷注抑制和介质诱导的喷注内部结构修正提供互补的敏感性。因此，该框架提供了一种约束喷注能量损失的幅度和味道依赖性，以及控制颜色退相干的介质分辨角的方法。
英文摘要
Using jet calculus at leading-logarithmic accuracy, we develop a generating-functional approach to describe the hard-collinear sector of jets propagating through the quark-gluon plasma. This framework yields coupled evolution equations for the jet nuclear modification factor and energy-energy correlators (EECs). We first construct the EEC evolution in the fully incoherent regime, and then derive evolution equations that account for the transition from the coherent to the incoherent limit in the large-$N_c$ limit. Furthermore, we show that combining the EEC with the jet nuclear modification factor provides complementary sensitivity to the overall jet suppression and to medium-induced modifications of the jet's internal structure. This framework therefore offers a way to constrain the magnitude and flavor dependence of jet energy loss, together with the medium resolution angle governing color decoherence.
发表机构
- Physics Department, Brookhaven National Laboratory（布鲁克海文国家实验室物理系）
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