Centrality dependence of charged hadron and strange hadron elliptic flow from root s(NN)=200 GeVAu+Au collisions

doi:10.1103/PhysRevC.77.054901

	Centrality dependence of charged hadron and strange hadron elliptic flow from root s(NN)=200 GeVAu+Au collisions
	Abelev, B. I.1; Aggarwal, M. M.33; Ahammed, Z.48; Anderson, B. D.21; Arkhipkin, D.14; Averichev, G. S.13; Bai, Y.30,31; Balewski, J.25; Barannikova, O.1; Barnby, L. S.3
刊名	PHYSICAL REVIEW C
	2008-05-01
卷号	77 页码:17
ISSN号	0556-2813
DOI	10.1103/PhysRevC.77.054901
英文摘要	We present STAR results on the elliptic flow upsilon(2) Of charged hadrons, strange and multistrange particles from,root s(NN) = 200 GeV Au+Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC). The detailed study of the centrality dependence of upsilon(2) over a broad transverse momentum range is presented. Comparisons of different analysis methods are made in order to estimate systematic uncertainties. To discuss the nonflow effect, we have performed the first analysis Of upsilon(2) with the Lee-Yang zero method for K-S(0) and A. In the relatively low PT region, P-T <= 2 GeV/c, a scaling with m(T) - m is observed for identified hadrons in each centrality bin studied. However, we do not observe nu 2(p(T))) scaled by the participant eccentricity to be independent of centrality. At higher PT, 2 1 <= PT <= 6 GeV/c, V2 scales with quark number for all hadrons studied. For the multistrange hadron Omega, which does not suffer appreciable hadronic interactions, the values of upsilon(2) are consistent with both m(T) - m scaling at low p(T) and number-of-quark scaling at intermediate p(T). As a function ofcollision centrality, an increase of p(T)-integrated upsilon(2) scaled by the participant eccentricity has been observed, indicating a stronger collective flow in more central Au+Au collisions.
资助项目	Science and Technology Facilities Council[PP/F001061/1]
WOS关键词	LEE-YANG ZEROS ; RELATIVISTIC NUCLEAR COLLISIONS ; ANISOTROPIC FLOW ; PHASE-TRANSITION ; COLLECTIVE FLOW ; SIGNATURE ; ENERGY ; EXPANSION ; QCD
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000256885600047
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/28403]
专题	中国科学院近代物理研究所
通讯作者	Abelev, B. I.
作者单位	1.Univ Illinois, Chicago, IL 60607 USA 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Univ Birmingham, Birmingham, W Midlands, England 4.Brookhaven Natl Lab, Upton, NY 11973 USA 5.CALTECH, Pasadena, CA 91125 USA 6.Univ Calif Berkeley, Berkeley, CA 94720 USA 7.Univ Calif Davis, Davis, CA 95616 USA 8.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 9.Univ Estadual Campinas, Sao Paulo, Brazil 10.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
推荐引用方式 GB/T 7714	Abelev, B. I.,Aggarwal, M. M.,Ahammed, Z.,et al. Centrality dependence of charged hadron and strange hadron elliptic flow from root s(NN)=200 GeVAu+Au collisions[J]. PHYSICAL REVIEW C,2008,77:17.
APA	Abelev, B. I..,Aggarwal, M. M..,Ahammed, Z..,Anderson, B. D..,Arkhipkin, D..,...&Zuo, J. X..(2008).Centrality dependence of charged hadron and strange hadron elliptic flow from root s(NN)=200 GeVAu+Au collisions.PHYSICAL REVIEW C,77,17.
MLA	Abelev, B. I.,et al."Centrality dependence of charged hadron and strange hadron elliptic flow from root s(NN)=200 GeVAu+Au collisions".PHYSICAL REVIEW C 77(2008):17.