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Event-by-Event di-hadron correlations in Pb-Pb 2.76 TeV collisions from the ALICE experiment.

机译:逐个事件DI-HADRON相关性来自Alice实验的PB-PB 2.76 TEV碰撞。

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The large multiplicities at the LHC may permit flow harmonics to be determined on an event-by-event basis in Pb-Pb collisions. We extract these harmonics from event-by-event di-hadron correlations. Within a fine centrality bin, we find the correlation function varies substantially on an event-by-event basis beyond expectations from statistical fluctuations. This implies large fluctuations in the initial conditions occur for a given impact parameter. Such large fluctuations lead to some events being highly triangular or highly elliptical, where the angular correlation function is completely dominated by the respective second and third Fourier harmonics. We will show unfolded V_2 distributions for various centralities, and implications for our understanding of the initial conditions.
机译:LHC的大量多个可以允许在PB-PB冲突中以事件基础确定流动谐波。我们从事件逐步的Di-HaTron相关性提取这些谐波。在良好的中心地区内,我们发现相关函数在逐个事件中基本上变化超出了统计波动的预期。这意味着给定影响参数的初始条件中的大波动。这种大波动导致一些事件高度三角形或高度椭圆形,其中角相关函数完全由各个第二和第三傅立叶谐波主导。我们将向各种集中力展示展开的V_2分布,并对我们对初始条件的理解造成影响。

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