角相关结果来自ALICE

M. Varga-Kofarago
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引用次数: 0

摘要

在重离子碰撞中,预计会产生夸克-胶子等离子体,这是一种几乎完美的液体,在大爆炸后几微秒内构成了宇宙。在这些碰撞中,射流也是由具有高横向动量的强子化部分形成的,它们穿过热而致密的介质并与之相互作用。它们的性质可以通过这些相互作用而改变,因此这些改变,如果存在的话,可以让我们深入了解等离子体本身的性质。角相关测量可用于研究横向动量($p_{\rm T}$)下的Pb-Pb碰撞中的喷流,在这种情况下,喷流在波动背景上不容易重建。小型碰撞系统(例如,pp或p-Pb)可以用作这些测量的参考;然而,这些碰撞本身是有趣的。例如,粒子产生机制和守恒定律可以在这些系统中进行测试。本文介绍了ALICE探测器记录的Pb-Pb和pp碰撞的结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Angular correlation results from ALICE
In heavy-ion collisions, the quark-gluon plasma is expected to be produced, which is an almost perfect liquid that made up the Universe a few microseconds after the Big Bang. In these collisions, jets are also formed from hadronizing partons with high transverse momentum, and they traverse the hot and dense medium and interact with it. Their properties can be modified by these interactions, therefore these modifications, if present, can give insight into the properties of the plasma itself. Angular correlation measurements can be used to study jets in Pb-Pb collisions in a transverse momentum ($p_{\rm T}$) regime where jets are not easily reconstructable above the fluctuating background. Small collision systems (e.g., pp or p-Pb) can be used as reference for these measurements; however, these collisions themselves are of interest. For example, particle production mechanisms and conservation laws can be tested in these systems. Results from Pb-Pb and pp collisions recorded by the ALICE detector are presented in this paper.
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