Correlation measurements between flow harmonics in Au plus Au collisions at RHIC

doi:10.1016/j.physletb.2018.05.076

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	Correlation measurements between flow harmonics in Au plus Au collisions at RHIC
	Adam, J ; Adamczyk, L ; Adams, JR ; Adkins, JK ; Agakishiev, G ; Aggarwal, MM ; Ahammed, Z ; Ajitanand, NN ; Alekseev, I ; Anderson, DM
刊名	PHYSICS LETTERS B
	2018
卷号	783 期号:-页码:459-465
关键词	ELLIPTIC FLOW NUCLEAR COLLISIONS SIGNATURE SPS
ISSN号	0370-2693
DOI	10.1016/j.physletb.2018.05.076
文献子类	期刊论文
英文摘要	Flow harmonics (v(n)) in the Fourier expansion of the azimuthal distribution of particles are widely used to quantify the anisotropy in particle emission in high-energy heavy-ion collisions. The symmetric cumulants, SC(m, n), are used to measure the correlations between different orders of flow harmonics. These correlations are used to constrain the initial conditions and the transport properties of the medium in theoretical models. In this Letter, we present the first measurements of the four-particle symmetric cumulants in Au+Au collisions at root s(NN) = 39 and 200 GeV from data collected by the STAR experiment at RHIC. We observe that v(2) and v(3) are anti-correlated in all centrality intervals with similar correlation strengths from 39 GeV Au+Au to 2.76 TeV Pb+Pb (measured by the ALICE experiment). The v(2)-v(4) correlation seems to be stronger at 39 GeV than at higher collision energies. The initial-stage anti-correlations between second and third order eccentricities are sufficient to describe the measured correlations between v(2) and v(3). The best description of v(2)-v(4) correlations at root s(NN) = 200 GeV is obtained with inclusion of the system's nonlinear response to initial eccentricities accompanied by the viscous effect with eta/s > 0.08. Theoretical calculations using different initial conditions, equations of state and viscous coefficients need to be further explored to extract eta/s of the medium created at RHIC. (C) 2018 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/30889]
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.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA 2.Lehigh Univ, Bethlehem, PA 18015 USA 3.Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany 4.Michigan State Univ, E Lansing, MI 48824 USA 5.Natl Res Nucl Univ MEPhI, Moscow 115409, Russia 6.Natl Inst Sci Educ & Res, HBNI, Jatni 752050, India 7.Natl Cheng Kung Univ, Tainan 70101, Taiwan 8.Ohio State Univ, Columbus, OH 43210 USA 9.Inst Nucl Phys PAN, PL-31342 Krakow, Poland 10.Panjab Univ, Chandigarh 160014, India
推荐引用方式 GB/T 7714	Adam, J,Adamczyk, L,Adams, JR,et al. Correlation measurements between flow harmonics in Au plus Au collisions at RHIC[J]. PHYSICS LETTERS B,2018,783(-):459-465.
APA	Adam, J.,Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,...&Zyza, M.(2018).Correlation measurements between flow harmonics in Au plus Au collisions at RHIC.PHYSICS LETTERS B,783(-),459-465.
MLA	Adam, J,et al."Correlation measurements between flow harmonics in Au plus Au collisions at RHIC".PHYSICS LETTERS B 783.-(2018):459-465.