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arXiv 1703.04077nucl-thnucl-ex
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相对论性重离子碰撞中的微分流关联

Differential flow correlations in relativistic heavy-ion collisions

Jing Qian, Ulrich Heinz, Ronghua He, Lei Huo

摘要:

本文系统地分析了不同阶数的$p_T$ -差分流之间的相关性,包括流矢量中的模态耦合效应、流动角(也称为流动角)之间的相关性。事件平面相关性),以及流量大小之间的相关性,所有这些都是以前用积分流量研究的。我们发现,模式之间的耦合效应的差分流在很大程度上反映了相应的集成流之间,除了在小的横向动量,模式耦合的贡献是小的。对于四阶和五阶流矢量$V_4$和$V_5$,我们认为事件平面相关性可以理解为模式耦合对这些流的贡献与流幅值之间的比率。我们还发现,对于$V_4$和$V_5$的线性响应的贡献比例与相应的累积量定义的偏心率线性,但不与标准偏心率。

英文摘要:

A systematic analysis of correlations between different orders of $p_T$-differential flow is presented, including mode coupling effects in flow vectors, correlations between flow angles (a.k.a. event-plane correlations), and correlations between flow magnitudes, all of which were previously studied with integrated flows. We find that the mode coupling effects among differential flows largely mirror those among the corresponding integrated flows, except at small transverse momenta where mode coupling contributions are small. For the fourth- and fifth-order flow vectors $V_4$ and $V_5$ we argue that the event plane correlations can be understood as the ratio between the mode coupling contributions to these flows and and the flow magnitudes. We also find that for $V_4$ and $V_5$ the linear response contribution scales linearly with the corresponding cumulant-defined eccentricities but not with the standard eccentricities.

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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