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arXiv 1602.01394nucl-th
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现有能区核-核和p-p碰撞赝快度分布的普适描述

A universal description of pseudorapidity distributions in both nucleus-nucleus and p-p collisions at now available energy regions

Z. J. Jiang, H. P. Deng, Y. Huang

摘要:

研究表明,集体运动不仅出现在核-核中,而且也出现在p-p碰撞中。描述这种集体运动的最佳工具是相对论流体力学。本文假设集体运动服从流体模型,该模型综合了Landau和Hwa-Bjorken理论的特点,是极少数解析可解的模型之一。然后假设流体从具有固定时间t_FO的类时超曲面冻结成带电粒子。本文的研究表明,这部分带电粒子与传统定义的携带碰撞核子量子数并带走大部分入射能量的领先粒子一起,可以对现有能区核-核和p-p碰撞中测量的带电粒子赝快度分布给出恰当的普适描述。

英文摘要:

Investigations have shown that the collective motion not only appears in nucleus-nucleus but also in p-p collisions. The best tool for depicting such collective motion is relativistic hydrodynamics. In this paper, the collective motion is assumed obeying the hydro model which integrates the features of Landau and Hwa-Bjorken theory and is one of a very few analytically solvable models. The fluid is then supposed freezing out into charged particles from a time-like hypersurface with a fixed time of t_FO . The researches of present paper show that this part of charged particles together with leading particles, which, by conventional definition, carry on the quantum numbers of colliding nucleons and take away the most part of incident energy, can give a proper universal description to the pseudorapidity distributions of charged particles measured in both nucleus-nucleus and p-p collisions at now available energy regions.

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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