Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV
文献类型：期刊论文
| 作者 | Adamczyk, L.1; Agakishiev, G.21; Aggarwal, M. M.34; Ahammed, Z.52; Alakhverdyants, A. V.21; Alekseev, I.19; Alford, J.22; Anderson, B. D.22; Anson, C. D.31; Arkhipkin, D.4 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2012-11-15 |
| 卷号 | 86 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.86.054908 |
| 文献子类 | Article |
| 英文摘要 | A systematic study is presented for centrality, transverse momentum (p(T)), and pseudorapidity (eta) dependence of the inclusive charged hadron elliptic flow (v(2)) at midrapidity (vertical bar eta vertical bar < 1.0) in Au + Au collisions at root s(NN) = 7.7, 11.5, 19.6, 27, and 39 GeV. The results obtained with different methods, including correlations with the event plane reconstructed in a region separated by a large pseudorapidity gap and four-particle cumulants (v(2){4}), are presented to investigate nonflow correlations and v(2) fluctuations. We observe that the difference between v(2){2} and v(2){4} is smaller at the lower collision energies. Values of v(2), scaled by the initial coordinate space eccentricity, v(2)/epsilon, as a function of p(T) are larger in more central collisions, suggesting stronger collective flow develops in more central collisions, similar to the results at higher collision energies. These results are compared to measurements at higher energies at the Relativistic Heavy Ion Collider (root s(NN) = 62.4 and 200 GeV) and at the Large Hadron Collider (Pb + Pb collisions at root s(NN) = 2.76 TeV). The v(2)(pT) values for fixed pT rise with increasing collision energy within the pT range studied (<2 GeV/c). A comparison to viscous hydrodynamic simulations is made to potentially help understand the energy dependence of v(2)(pT). We also compare the v(2) results to UrQMD and AMPT transport model calculations, and physics implications on the dominance of partonic versus hadronic phases in the system created at beam energy scan energies are discussed. |
| WOS关键词 | QCD PHASE-DIAGRAM ; NUCLEAR COLLISIONS ; CENTRALITY DEPENDENCE ; ANISOTROPIC FLOW ; COLLECTIVE FLOW ; STAR EXPERIMENT ; CRITICAL-POINT ; TRANSITION ; FLUCTUATIONS ; SIGNATURE |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000311141400004 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://119.78.100.186/handle/113462/48679]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Adamczyk, L. |
| 作者单位 | 1.AGH Univ Sci & Technol, Krakow, Poland 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Univ Birmingham, Birmingham, 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, 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 | Adamczyk, L.,Agakishiev, G.,Aggarwal, M. M.,et al. Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV[J]. PHYSICAL REVIEW C,2012,86. |
| APA | Adamczyk, L..,Agakishiev, G..,Aggarwal, M. M..,Ahammed, Z..,Alakhverdyants, A. V..,...&STAR Collaboration.(2012).Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV.PHYSICAL REVIEW C,86. |
| MLA | Adamczyk, L.,et al."Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV".PHYSICAL REVIEW C 86(2012). |
入库方式： OAI收割
来源：近代物理研究所
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