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arXiv 2009.03530hep-phnucl-th
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致密QCD物质中的射流电荷改性

Jet charge modification in dense QCD matter

Haitao Li, Ivan Vitev

摘要:

在这些会议记录中,我们报告了最近计算的喷流电荷修改重离子相对于质子碰撞在大型强子对撞机。喷流在限制介质中部分子簇射演化理论和确定超相对论性核反应中产生的夸克-胶子等离子体的性质方面起着至关重要的作用。重要的是要扩展这些研究的味道标记的喷流和探索的可观测性,是敏感的部分子的起源。在量子色动力学早期引入的平均喷注电荷,是引发喷注的夸克或胶子的电荷的代表。在软共线有效理论的框架下,我们展示了如何评估在稠密强相互作用物质环境中的射流电荷。我们确定的观测值,可以隔离的贡献,在介质中的分支的同位旋效应和目前的预测的横向动量依赖性的射流电荷分布在核-核碰撞及其修改相对于质子的情况下。

英文摘要:

In these proceedings we report a recent calculation of the jet charge modification in heavy-ion relative to proton collisions at the LHC. Jets have played an essential role in constraining theories of in-medium parton shower evolution and in determining the properties of the quark-gluon plasma created in ultra-relativistic nuclear reactions. It is important to extend these studies to flavor-tagged jets and explore observables that are sensitive to their partonic origin. The average jet charge, introduced early on in the history of quantum chromodynamics, is a proxy for the electric charge of the quark or gluon that initiates the jet. In the framework of soft-collinear effective theory, we show how to evaluate the jet charge in a dense strongly-interacting matter environments. We identify observables that can isolate the contribution of in-medium branching from isospin effects and present predictions for the transverse momentum dependence of the jet charge distribution in nucleus-nucleus collisions and its modification relative to the proton case.

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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