标题:Energy and system-size dependence of two- and four-particle v2 measurements in heavy-ion collisions at √sNN=62.4 and 200 GeV and their implications on flow fluctuations and nonflow
作者:Agakishiev G.; Aggarwal M.M.; Ahammed Z.; Alakhverdyants A.V.; Alekseev I.; Alford J.; Anderson B.D.; Anson C.D.;等 更多
作者机构:[Agakishiev, G] Joint Institute for Nuclear Research, Dubna 141 980, Russian Federation;[ Aggarwal, M.M] Panjab University, Chandigarh 160014, India;[ 更多
通讯作者地址:[Agakishiev, G] Joint Institute for Nuclear Research, Dubna 141 980, Russian Federation
来源:Physical Review C - Nuclear Physics
出版年:2012
卷:86
期:1
DOI:10.1103/PhysRevC.86.014904
摘要:We present STAR measurements of azimuthal anisotropy by means of the two- and four-particle cumulants v2 (v2{2} and v 2{4}) for Au+Au and Cu+Cu collisions at center-of-mass energies √sNN=62.4 and 200 GeV. The difference between v 2 {2}2 and v2 {4 }2 is related to v2 fluctuations (σv2) and nonflow (δ2). We present an upper limit to σv 2/v2. Following the assumption that eccentricity fluctuations σ dominate v2 fluctuations σv 2v2≈σ we deduce the nonflow implied for several models of eccentricity fluctuations that would be required for consistency with v2{2} and v2{4}. We also present results on the ratio of v2 to eccentricity. © 2012 American Physical Society.
收录类别:SCOPUS
Scopus被引频次:26
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864416587&doi=10.1103%2fPhysRevC.86.014904&partnerID=40&md5=f87fed3bdd13b5777100293edc3757c1
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