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arXiv 1004.4068hep-ph
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pQCD-based部分子输运模型中喷流猝灭和椭圆流的研究

Investigation of jet quenching and elliptic flow within a pQCD-based partonic transport model

Oliver Fochler, Zhe Xu, Carsten Greiner

摘要:

利用部分子输运模型BAMPS(一种多部分子散射的玻尔兹曼方法),在基于微扰QCD的共同框架下研究了重离子碰撞的不同方面。本报告的重点是联合调查的集体行为的创建介质和高pT胶子穿越这种介质的能量损失。为此,用BAMPS模拟了200 AGeV重离子碰撞中的椭圆流和胶子核修正因子。详细研究了高能胶子在BAMPS中的能量损失机制。为此,将纯弹性相互作用与辐射过程gg -> ggg进行比较,后者是基于Guunion和Bertsch的矩阵元素实现的。后者被认为是在这项工作中采用的框架内的能量损失的主要来源。

英文摘要:

The partonic transport model BAMPS (a Boltzmann approach to multiparton scatterings) is employed to investigate different aspects of heavy ion collisions within a common framework based on perturbative QCD. This report focuses on the joint investigation of the collective behavior of the created medium and the energy loss of high-pT gluons traversing this medium. To this end the elliptic flow and the nuclear modification factor of gluons in heavy ion collisions at 200 AGeV are simulated with BAMPS. The mechanism for the energy loss of high energy gluons within BAMPS is studied in detail. For this, purely elastic interactions are compared to radiative processes, gg -> ggg, that are implemented based on the matrix element by Gunion and Bertsch. The latter are found to be the dominant source of energy loss within the framework employed in this work.

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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