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Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV
Adamczyk, L; Agakishiev, G; Cai, XZ(蔡翔舟); Chen, JH; Han LX,Li, W; Ma, GL(马国亮); Ma, YG(马余刚); Shou, QY; Tian, J(田健); Xue, L(薛莲); Zhang, S(张松); Zhao, J; Zhong, C(钟晨); Zhu, YH; Zoulkarneeva, Y; Zyzak, M
2012
Source PublicationPHYSICAL REVIEW C
ISSN0556-2813
Volume86Issue:5
AbstractA 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.
Language英语
Funding Project应物所项目组
WOS IDWOS:000311141400004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13193
Collection中科院上海应用物理研究所2011-2020年
Recommended Citation
GB/T 7714
Adamczyk, L,Agakishiev, G,Cai, XZ,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(5).
APA Adamczyk, L.,Agakishiev, G.,Cai, XZ.,Chen, JH.,Han LX,Li, W.,...&Zyzak, M.(2012).Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV.PHYSICAL REVIEW C,86(5).
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 86.5(2012).
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