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arXiv 1002.2206hep-phnucl-exnucl-th
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微扰QCD射流淬火的理论与唯象

The theory and phenomenology of perturbative QCD based jet quenching

A. Majumder, M. Van Leeuwen

摘要:

本文综述了通过硬喷流研究稠密物质强相互作用的结构。硬碰撞中产生的高动量部分子在经历强子化的非微扰过程之前产生胶子簇。在稠密介质的存在下,由于介质中组分的各种部分子的散射,这种簇射被修改。最后检测到的强子的修改模式是对喷流所感知的介质结构的探测。从粒子碰撞的因式分解出发,回顾了基于微扰量子色动力学(pQCD)的介质诱导胶子辐射的基本理论,以及目前大核深度非弹性散射和高能重离子碰撞的实验结果,强调了这些结果如何限制了我们对能量损失的理解.这篇评论包括辐射能量损失,弹性能量损失的理论介绍,以及相应的实验观测和问题。我们关闭的重要的计算和测量,需要进行讨论,以完成在未来的高能对撞机在高能量的射流修改的描述。

英文摘要:

The study of the structure of strongly interacting dense matter via hard jets is reviewed. High momentum partons produced in hard collisions produce a shower of gluons prior to undergoing the non-perturbative process of hadronization. In the presence of a dense medium this shower is modified due to scattering of the various partons off the constituents in the medium. The modified pattern of the final detected hadrons is then a probe of the structure of the medium as perceived by the jet. Starting from the factorization paradigm developed for the case of particle collisions, we review the basic underlying theory of medium induced gluon radiation based on perturbative Quantum Chromo Dynamics (pQCD) and current experimental results from Deep Inelastic Scattering on large nuclei and high energy heavy-ion collisions, emphasizing how these results constrain our understanding of energy loss. This review contains introductions to the theory of radiative energy loss, elastic energy loss, and the corresponding experimental observables and issues. We close with a discussion of important calculations and measurements that need to be carried out to complete the description of jet modification at high energies at future high energy colliders.

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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