Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions

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	Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions
	Abdelwahab, NM; Adamczyk, L; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Alford, J; Anson, CD; Aparin, A
刊名	PHYSICS LETTERS B
	2015
卷号	745 页码:40—47
关键词	RELATIVISTIC NUCLEAR COLLISIONS COLLECTIVE FLOW
英文摘要	A data-driven method was applied to Au+Au collisions at root S-NN = 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance Delta eta-dependent and Delta eta-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a Delta eta-independent component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was also found to be independent of. within the measured range of pseudorapidity vertical bar eta vertical bar < 1. In 20-30% central Au+Au collisions, the relative flow fluctuation was found to be 34% +/- 2%(stat.) +/- 3%(sys.) for particles with transverse momentum p(T) less than 2 GeV/c. The Delta eta-dependent part, attributed to nonflow correlations, is found to be 5% +/- 2%(sys.) relative to the flow of the measured second harmonic cumulant at vertical bar Delta eta vertical bar > 0.7. (C) 2015 The Authors. Published by Elsevier B.V.
收录类别	SCI
语种	英语
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/24490]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Abdelwahab, NM,Adamczyk, L,Adkins, JK,et al. Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions[J]. PHYSICS LETTERS B,2015,745:40—47.
APA	Abdelwahab, NM.,Adamczyk, L.,Adkins, JK.,Agakishiev, G.,Aggarwal, MM.,...&Zyzak, M.(2015).Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions.PHYSICS LETTERS B,745,40—47.
MLA	Abdelwahab, NM,et al."Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in root s(NN)=200 GeV Au+Au collisions".PHYSICS LETTERS B 745(2015):40—47.