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Energy and system-size dependence of two- and four-particle nu(2) measurements in heavy-ion collisions at root S-NN=62.4 and 200 GeV and their implications on flow fluctuations and nonflow

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成果类型:
期刊论文
作者:
Agakishiev, G.*;Aggarwal, M. M.;Ahammed, Z.;Alakhverdyants, A. V.;Alekseev, I.;...
通讯作者:
Agakishiev, G.
作者机构:
[Kechechyan, A.; Kizka, V.; Agakishiev, G.; Averichev, G. S.; Bunzarov, I.; Efimov, L. G.; Panebratsev, Y.; Alakhverdyants, A. V.; Shahaliev, E.; Rogachevskiy, O. V.; Fedorisin, J.; Zoulkarneeva, Y.; Tokarev, M.; Filip, P.; Lednicky, R.; Dedovich, T. G.; Vokal, S.] Joint Inst Nucl Res, Dubna 141980, Russia.
[Underwood, D. G.; Krueger, K.; Bridgeman, A.; Spinka, H. M.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Ullrich, T.; Pile, P.; Lamont, M. A. C.; LeVine, M. J.; Ljubicic, T.; Xu, Z.; Ogawa, A.; Ruan, L.; Tang, A. H.; Videbaek, F.; Fine, V.; Fisyak, Y.; Beavis, D. R.; Lauret, J.; Bland, L. C.; Longacre, R. S.; Webb, J. C.; Sorensen, P.; Christie, W.; Arkhipkin, D.; Debbe, R. R.; Lebedev, A.; Burton, T. P.; Dunlop, J. C.; Gordon, A.; Landgraf, J. M.; Yip, K.; Didenko, L.; Guryn, W.; Mitrovski, M. K.; Van Buren, G.; Lee, J. H.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Perkins, C.; Crawford, H. J.; Engelage, J.; Judd, E. G.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Sanchez, M. Calderon de la Barca; Mall, O. I.; Draper, J. E.; Cebra, D.; Brovko, S. G.; Sangaline, E.; Reed, R.; Romero, J. L.; Salur, S.; Haag, B.; Liu, H.] Univ Calif Davis, Davis, CA 95616 USA.
通讯机构:
[Agakishiev, G.] J
Joint Inst Nucl Res, Dubna 141980, Russia.
语种:
英文
期刊:
PHYSICAL REVIEW C
ISSN:
2469-9985
年:
2012
卷:
86
期:
1
基金类别:
RHIC Operations Group; RCF at BNL; NERSC Center at LBNL; Offices of NP; US DOE Office of ScienceUnited States Department of Energy (DOE); US NSFNational Science Foundation (NSF); BMBF of GermanyFederal Ministry of Education & Research (BMBF) [CNRS/IN2P3]; RA of France; RPL of France; EMN of France; EPSRC of the United KingdomUK Research & Innovation (UKRI)Engineering & Physical Sciences Research Council (EPSRC); FAPESP of BrazilFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Russian Ministry of Science and Technology; Ministry of Education; NNSFC of ChinaNational Natural Science Foundation of China (NSFC); IRP of the Czech Republic; GA of the Czech Republic; FOM of the NetherlandsFOM (The Netherlands); DAE of the government of India; DST of the government of India; CSIR of the government of IndiaCouncil of Scientific & Industrial Research (CSIR) - India; Swiss NSFSwiss National Science Foundation (SNSF); Polish State Committee for Scientific ResearchPolish State Committee for Scientific Research; VEGA of Slovakia; Korea Science and Engineering FoundationKorea Science and Engineering Foundation
机构署名:
本校为其他机构
院系归属:
物理科学与技术学院
摘要:
We present STAR measurements of azimuthal anisotropy by means of the two- and four-particle cumulants nu(2) (nu(2){2} and nu(2){4}) for Au + Au and Cu + Cu collisions at center-of-mass energies root S-NN = 62.4 and 200 GeV. The difference between nu(2){2}(2) and nu(2){4}(2) is related to nu(2) fluctuations (sigma(nu 2)) and nonflow (delta(2)). We present an upper limit to sigma(nu 2)/nu 2. Following the assumption that eccentricity fluctuations sigma(epsilon) dominate nu(2) fluctuations nu(2)/sigma nu(2) approximate to epsilon/sigma epsilon we deduce the nonflow implied for several models of e...

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