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Centrality dependence of charged hadron and strange hadron elliptic flow from root s(NN)=200 GeVAu+Au collisions
文献类型：期刊论文
| 作者 | 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
 |
| 出版日期 | 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. |
| WOS关键词 | LEE-YANG ZEROS ; RELATIVISTIC NUCLEAR COLLISIONS ; ANISOTROPIC FLOW ; PHASE-TRANSITION ; COLLECTIVE FLOW ; SIGNATURE ; ENERGY ; EXPANSION ; QCD |
| 资助项目 | Science and Technology Facilities Council[PP/F001061/1] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000256885600047 |
| 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. |
入库方式： OAI收割
来源：近代物理研究所
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