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arXiv 1012.0186hep-ph
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重离子物理中的硬探针

Hard Probes in Heavy-Ion Physics

Thorsten Renk

摘要:

超相对论重离子物理的目的是通过产生具有极端密度和温度的瞬态小体积物质来研究量子色动力学(QCD)的集体性和热力学。有实验证据表明,在这种碰撞中产生的大多数粒子确实形成了一个热化系统,其特征是对压力梯度的集体反应。然而,一个数值上的小子集的高横向动量($P_T$)过程发生独立的散装,与传出的部分子随后通过散装介质传播。理解这种“硬探针”的散装介质的修改是努力确定热和致密QCD物质的性质的重要组成部分。本文综述了目前的发展情况。

英文摘要:

The aim of ultrarelativistic heavy ion physics is to study collectivity and thermodynamics of Quantum Chromodynamics (QCD) by creating a transient small volume of matter with extreme density and temperature. There is experimental evidence that most of the particles created in such a collision form indeed a thermalized system characterized by collective response to pressure gradients. However, a numerically small subset of high transverse momentum ($P_T$) processes takes place independent of the bulk, with the outgoing partons subsequently propagating through the bulk medium. Understanding the modification of such 'hard probes' by the bulk medium is an important part of the efforts to determine the properties of hot and dense QCD matter. In this paper, current developments are reviewed.

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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