Inclusive charged hadron elliptic flow in Au+Au collisions at root s(NN)=7.7-39 GeV

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	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
刊名	PHYSICAL REVIEW C
	2012
卷号	86 期号:5
ISSN号	0556-2813
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.
语种	英语
WOS记录号	WOS:000311141400004
公开日期	2013-12-05
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/13193]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 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).