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

Published

Journal Article

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.

Full Text

Duke Authors

Cited Authors

  • Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alakhverdyants, AV; Alekseev, I; Alford, J; Anderson, BD; Anson, CD; Arkhipkin, D; Averichev, GS; Balewski, J; Beavis, DR; Behera, NK; Bellwied, R; Betancourt, MJ; Betts, RR; Bhasin, A; Bhati, AK; Bichsel, H; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Borowski, W; Bouchet, J; Braidot, E; Brandin, AV; Bridgeman, A; Brovko, SG; Bruna, E; Bueltmann, S; Bunzarov, I; Burton, TP; Cai, XZ; Caines, H; Calderón De La Barca Sánchez, M; Cebra, D; Cendejas, R; Cervantes, MC; Chaloupka, P; Chattopadhyay, S; Chen, HF; Chen, JH; Chen, JY; Chen, L; Cheng, J; Cherney, M; Chikanian, A; Choi, KE; Christie, W; Chung, P; Codrington, MJM; Corliss, R; Cramer, JG; Crawford, HJ; Cui, X; Davila Leyva, A; De Silva, LC; Debbe, RR; Dedovich, TG; Deng, J; Derevschikov, AA; Derradi De Souza, R; Didenko, L; Djawotho, P; Dong, X; Drachenberg, JL; Draper, JE; Du, CM; Dunlop, JC; Efimov, LG; Elnimr, M; Engelage, J; Eppley, G; Estienne, M; Eun, L; Evdokimov, O; Fatemi, R; Fedorisin, J; Fersch, RG; Filip, P; Finch, E; Fine, V; Fisyak, Y; Gagliardi, CA; Gangadharan, DR; Geurts, F; Ghosh, P; Gorbunov, YN; Gordon, A; Grebenyuk, OG; Grosnick, D; Gupta, A; Gupta, S; Guryn, W; Haag, B; Hajkova, O; Hamed, A; Han, LX; Harris, JW

Published Date

  • July 11, 2012

Published In

Volume / Issue

  • 86 / 1

Electronic International Standard Serial Number (EISSN)

  • 1089-490X

International Standard Serial Number (ISSN)

  • 0556-2813

Digital Object Identifier (DOI)

  • 10.1103/PhysRevC.86.014904

Citation Source

  • Scopus