Correlations of flow harmonics in 2.76A TeV Pb-Pb collisions

Correlations of flow harmonics in 2.76A TeV Pb-Pb collisions
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2.76A TeV Pb-Pb 碰撞中流动谐波的相关性

DOI:
10.1103/physrevc.95.044902
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发表时间:
2017
期刊:
影响因子:
3.1
通讯作者:
Song Huichao
Song Huichao
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhu Xiangrong;Zhou You;Xu Haojie;Song Huichao

文献摘要

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使用逐事件粘性流体动力学 VISH2+1 和 MC-Glauber、MC-KLN 和 AMPT 初始条件,我们研究了 TeV Pb-Pb 碰撞中流动谐波的相关性,包括对称累积量和归一化对称累积量。我们发现它对初始条件和比剪切粘度都很敏感。与最近的ALICE数据的比较表明,我们的水动力计算可以定性地描述各种初始条件下的数据,这表明 和 是反相关的,并且是相关的。同时,预测的对称累积量 和 表明,在大多数中心性类别中, 和 是相关的, 和 是相关的,而 和 是反相关的。我们还发现它对初始状态不敏感,并且主要由相应的 NSCɛ(3,2) 决定。相比之下,其他受到初始条件 和 的影响,这说明了较高流量谐波中的非线性模式耦合。
Using the event-by-event viscous hydrodynamicsVISH2+1withMC-Glauber,MC-KLN, andAMPTinitial conditions, we investigate the correlations of flow harmonics including the symmetric cumulantsand the normalized symmetric cumulantsinTeV Pb-Pb collisions. We findis sensitive to both initial conditions and the specific shear viscosity. Comparisons with the recent ALICE data show that our hydrodynamic calculations can qualitatively describe the data ofandfor various initial conditions, which demonstrate thatandare anticorrelated andandare correlated. Meanwhile, the predicted symmetric cumulants,, andreveal thatandare correlated andandare correlated, whileandare anticorrelated in most centrality classes. We also find thatis insensitive to, and is mainly determined by corresponding NSCɛ(3,2) from the initial state. In contrast, otherare influenced by both initial conditions and, which illustrates the nonlinear mode couplings in higher flow harmonics with.