Ultracentral heavy ion collisions due to their exceptionally large multiplicity probe an interesting regime of quark-gluon plasma where the size is (mostly) fixed and fluctuations in the initial condition dominate. Spurred by the recent measurement of the CMS collaboration we investigate the driving factors of the increase of transverse momentum, including a complete analysis of the influence of the QCD equation of state. Particularly interesting is the influence of the centrality selection as well as the initial energy deposition.

中文翻译：

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超中心重离子碰撞、横向动量和状态方程


超中心重离子碰撞由于其异常大的多重性而探测夸克-胶子等离子体的有趣状态，其中尺寸（大部分）是固定的并且初始条件的波动占主导地位。在最近 CMS 协作测量的推动下，我们研究了横向动量增加的驱动因素，包括对 QCD 状态方程的影响进行了完整分析。特别有趣的是中心性选择以及初始能量沉积的影响。