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arXiv 2001.03407nucl-ex
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重离子与ALICE碰撞中各向异性流的赝快度依赖

Pseudorapidity dependence of anisotropic flow in heavy ion collisions with ALICE

Freja Thoresen

摘要:

在5.02 TeV的Pb $-$-Pb碰撞中,给出了赝快度($-3.5 \leq η\leq 5$)在很大范围内对流动系数$v_n$的依赖关系.流量系数用2-和4-粒子累积量与$|Δη| > 0$和$|Δη| > 2$测量。$v_2\{2,|Δη|>0\}$和$v_2\{2,|Δη|>2\}$之间的差异意味着两种方法之间的流动矢量的去相关或非流动效应的变化。AMPT模型显示出与测量的定性一致。

英文摘要:

The pseudorapidity dependence of flow coefficients, $v_n$, is presented over a large range in pseudorapidity ($-3.5 \leq η\leq 5$) in Pb$-$Pb collisions at 5.02 TeV. The flow coefficients are measured with 2- and 4-particle cumulants with $|Δη| > 0$ and $|Δη| > 2$. The difference between $v_2\{2,|Δη|>0\}$ and $v_2\{2,|Δη|>2\}$ implies changes in either the de-correlation of flow vectors or non-flow effects between the two methods. The AMPT model shows a qualitative agreement with the measurements.

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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