Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV

doi:10.1103/PhysRevC.98.014915

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	Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV
	Adamczyk, L ; Adams, JR ; Adkins, JK ; Agakishiev, G ; Aggarwa, MM ; Ahammed, Z ; Ajitanand, NN ; Alekseev, I ; Anderson, DM ; Aoyama, R
刊名	PHYSICAL REVIEW C
	2018
卷号	98 期号:1 页码:-
关键词	HEAVY-ION COLLISIONS DIRECTED FLOW NUCLEAR COLLISIONS AU+AU COLLISIONS ENERGY IDENTIFICATION DEPENDENCE
ISSN号	2469-9985
DOI	10.1103/PhysRevC.98.014915
文献子类	期刊论文
英文摘要	The azimuthal anisotropic flow of identified and unidentified charged particles has been systematically studied in Cu+Au collisions at root s(NN) = 200 GeV for harmonics n = 1-4 in the pseudorapidity range vertical bar eta vertical bar < 1. The directed flow in Cu+Au collisions is compared with the rapidity-odd and, for the first time, the rapidity-even components of charged particle directed flow in Au+Au collisions at root s(NN) = 200 GeV. The slope of the directed flow pseudorapidity dependence in Cu+Au collisions is found to be similar to that in Au+Au collisions, with the intercept shifted toward positive pseudorapidity values, i.e., the Cu-going direction. The mean transverse momentum projected onto the spectator plane < p(x)> in Cu+Au collision also exhibits approximately linear dependence on pseudorapidity with the intercept at about eta approximate to -0.4 (shifted from zero in the Au-going direction), closer to the rapidity of the Cu+Au system center of mass. The observed dependencies find a natural explanation in a picture of the directed flow originating partly due the "tilted source" and partly due to the asymmetry in the initial density distribution. A charge dependence of < p(x)> was also observed in Cu+Au collisions, consistent with an effect of the initial electric field created by charge difference of the spectator protons in two colliding nuclei. The rapidity-even component of directed flow in Au+Au collisions is close to that in Pb+Pb collisions at root s(NN) = 2.76 TeV, indicating a similar magnitude of dipolelike fluctuations in the initial-state density distribution. Higher harmonic flow in Cu+Au collisions exhibits similar trends to those observed in Au+Au and Pb+Pb collisions and is qualitatively reproduced by a viscous hydrodynamic model and a multiphase transport model. For all harmonics with n >= 2 we observe an approximate scaling of v(n) with the number of constituent quarks; this scaling works as well in Cu+Au collisions as it does in Au+Au collisions.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/30856]
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
作者单位	1.Panjab Univ, Chandigarh 160014, India 2.AGH Univ Sci & Technol, FPACS, PL-30059 Krakow, Poland 3.Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA 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.Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China 9.Univ Illinois, Chicago, IL 60607 USA 10.Creighton Univ, Omaha, NE 68178 USA
推荐引用方式 GB/T 7714	Adamczyk, L,Adams, JR,Adkins, JK,et al. Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV[J]. PHYSICAL REVIEW C,2018,98(1):-.
APA	Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,Aggarwa, MM.,...&Zyzak, M.(2018).Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV.PHYSICAL REVIEW C,98(1),-.
MLA	Adamczyk, L,et al."Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV".PHYSICAL REVIEW C 98.1(2018):-.