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arXiv 1702.05862nucl-thhep-ph
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利用MATTER事例Generator进行射流修正的逐事例模拟

Event-by-Event Simulations of Jet Modification Using the MATTER Event Generator

Michael Kordell, Abhijit Majumder

摘要:

利用物质事件发生器研究了夸克-胶子等离子体(QGP)中硬喷注的修正。基于能量损失的高扭曲形式,物质事件发生器模拟了高度虚拟的部分子通过介质的演化。这些部分子采样从一个潜在的PYTHIA内核通过真空和介质诱导发射的组合进行分裂。通过射流传输系数$\hat{q}$模拟与介质的动量交换,假设射流传输系数与介质中给定位置处的熵密度成比例。熵密度是从2+1时空维的相对论粘性流体动力学模拟(VISH2+1D)中获得的。喷流和强子可观的结果使用一个独立的碎裂模型。这些程序将集中在物理输入和模拟细节的物质事件发生器相比,各种测试可观的。

英文摘要:

The modification of hard jets in the Quark Gluon Plasma (QGP) is studied using the MATTER event generator. Based on the higher twist formalism of energy loss, the MATTER event generator simulates the evolution of highly virtual partons through a medium. These partons sampled from an underlying PYTHIA kernel undergo splitting through a combination of vacuum and medium induced emission. The momentum exchange with the medium is simulated via the jet transport coefficient $\hat{q}$, which is assumed to scale with the entropy density at a given location in the medium. The entropy density is obtained from a relativistic viscous fluid dynamics simulation (VISH2+1D) in 2+1 space time dimensions. Results for jet and hadron observables are presented using an independent fragmentation model. These proceedings will focus on the physics input and simulation details of the MATTER event generator as compared to a variety of test observables.

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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