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

doi:10.1016/j.physletb.2015.04.033

	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, N. M.55; Adamczyk, L.1; Adkins, J. K.23; Agakishiev, G.21; Aggarwal, M. M.35; Ahammed, Z.53; Alekseev, I.19; Alford, J.22; Anson, C. D.32; Aparin, A.21
刊名	PHYSICS LETTERS B
	2015-05-18
卷号	745 页码:40-47
关键词	Heavy-ion Flow Nonflow
ISSN号	0370-2693
DOI	10.1016/j.physletb.2015.04.033
文献子类	Article
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.
资助项目	National Research Foundation[NRF-2012004024]
WOS关键词	RELATIVISTIC NUCLEAR COLLISIONS ; COLLECTIVE FLOW
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000353892300005
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/47837]
专题	中国科学院近代物理研究所
通讯作者	Yi, L.
作者单位	1.AGH Univ Sci & Technol, PL-30059 Krakow, Poland 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Univ Birmingham, Birmingham B15 2TT, W Midlands, England 4.Brookhaven Natl Lab, Upton, NY 11973 USA 5.Univ Calif Berkeley, Berkeley, CA 94720 USA 6.Univ Calif Davis, Davis, CA 95616 USA 7.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 8.Univ Estadual Campinas, BR-13131 Sao Paulo, Brazil 9.Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China 10.Univ Illinois, Chicago, IL 60607 USA
推荐引用方式 GB/T 7714	Abdelwahab, N. M.,Adamczyk, L.,Adkins, J. K.,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, N. M..,Adamczyk, L..,Adkins, J. K..,Agakishiev, G..,Aggarwal, M. M..,...&STAR Collaboration.(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, N. M.,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.