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arXiv 1306.0121hep-ph
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EPOS LHC:用LHC数据检验集体强子化

EPOS LHC : test of collective hadronization with LHC data

T. Pierog, Iu. Karpenko, J. M. Katzy, E. Yatsenko, K. Werner

摘要:

EPOS是一个最小偏置强子相互作用的蒙特卡罗事件发生器,用于重离子相互作用和宇宙线空气簇射模拟。自2009年最后一次公开发布以来,LHC实验提供了许多非常有趣的数据集,包括最小偏差p-p,p-Pb和Pb-Pb相互作用。我们描述了模型所需的变化,以详细再现LHC提供的新数据和解释这些数据的后果。特别讨论了集体强子化对p-p散射的影响。与重离子碰撞中产生的大体积相比,在p-p中达到的具有高密度热化物质(核心)的小体积的情况下,引入了不同的流动参数化。这两种参数化只依赖于几何形状和进入核心的二次粒子的数量,而不依赖于束流的质量或能量。两种流动状态之间的过渡可以用p-Pb数据来检验。EPOS LHC能够再现所有最小偏差

英文摘要:

EPOS is a Monte-Carlo event generator for minimum bias hadronic interactions, used for both heavy ion interactions and cosmic ray air shower simulations. Since the last public release in 2009, the LHC experiments have provided a number of very interesting data sets comprising minimum bias p-p, p-Pb and Pb-Pb interactions. We describe the changes required to the model to reproduce in detail the new data available from LHC and the consequences in the interpretation of these data. In particular we discuss the effect of the collective hadronization in p-p scattering. A different parametrization of flow has been introduced in the case of a small volume with high density of thermalized matter (core) reached in p-p compared to large volume produced in heavy ion collisions. Both parametrizations depend only on the geometry and the amount of secondary particles entering in the core and not on the beam mass or energy. The transition between the two flow regimes can be tested with p-Pb data. EPOS LHC is able to reproduce all minimum bias

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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