论文标题
流动物质扩大 - 重新调整
Jet Broadening in Flowing Matter -- Resummation
论文作者
论文摘要
在这项工作中，我们获得了由物质横向流引起的QCD介质中喷射动量扩大分布的领先校正。我们首先得出了高能量的parton的单粒子传播器，该传播剂与同质流动物质重新介绍了其多个相互作用，从而明确地保持了领先的腹部流动流项。然后，我们使用此繁殖器来获得喷射扩大分布及其领先时刻。我们表明，这种分布在存在横向流的情况下变为各向异性，因为它的奇数矩通常非零，并且与培养基的横向速度成正比。最后，我们评估了几个奇怪的时刻，我们将其与不透明度的一阶结果进行了比较，这表明对多个中等内部散射的核算对于描述密集核物质中的一些可观察物是必不可少的。
In this work, we obtain the leading corrections to the jet momentum broadening distribution in a QCD medium arising from the transverse flow of the matter. We first derive the single-particle propagator of a highly energetic parton resumming its multiple interactions with the homogeneous flowing matter, explicitly keeping the leading subeikonal flow terms. Then, we use this propagator to obtain the jet broadening distribution and its leading moments. We show that this distribution becomes anisotropic in the presence of transverse flow, since its odd moments are generally non-zero and proportional to the transverse velocity of the medium. Finally, we evaluate several odd moments, which we compare to the corresponding results at first order in opacity, showing that accounting for multiple in-medium scatterings is essential to describe some observables in dense nuclear matter.
