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Adamczyk, L; Adkins, J K; Agakishiev, G; Aggarwal, M M; Aparin, A; Arkhipkin, D; Aschenauer, E C; Bhasin, A; Bielcikova, J; Bland, L C; Bordyuzhin, I G; Butterworth, J; Cebra, D; Cherney, M; Christie, W; Derevschikov, A A; Didenko, L; Drachenberg, J L; Du, C M; Engelage, J; Evdokimov, O; Eyser, O; Fazio, S; Fedorisin, J; Gagliardi, C A; Gibson, A; Girard, M; Gunarathne, D S; Gupta, S; Hamad, A; Hamed, A; Haque, R; Hirsch, A; Hofman, D J; Huang, H Z; Kabana, S; Kang, K; Ke, H W; Keane, D; Kisiel, A; Kotchenda, L; Landry, K D; Li, W; Li, X; Li, X; Liu, F; Ljubicic, T; Ma, Y G; Ma, G L; Majka, R; Manion, A; Margetis, S; Masui, H; McDonald, D; Minaev, N G; Morozov, D A; Mustafa, M K; Nandi, B K; Nayak, T K; Nogach, L V; Odyniec, G; Pawlik, B; Pei, H; Planinic, M; Putschke, J; Ray, R L; Rogachevskiy, O V; Roy, A; Sakrejda, I; Salur, S; Sandweiss, J; Seyboth, P; Shanmuganathan, P V; Shou, Q Y; Sikora, R; Skoby, M J; Smirnov, N; Sorensen, P; Stanislaus, T D S; Stepanov, M; Sun, X; Sun, X M; Sun, Z; Tribedy, P; Tripathy, S K; Tsai, O D; Upsal, I; van Nieuwenhuizen, G; Vertesi, R; Viyogi, Y P; Xie, W; Xin, K; Xu, N; Xu, Q H; Yang, Y; Yu, N; Zhang, J B; Zhang, Z; Zhu, X; Zyzak, M
Physical review letters, 2015-Nov-27, Volume: 115, Issue: 22Journal Article
Collisions between prolate uranium nuclei are used to study how particle production and azimuthal anisotropies depend on initial geometry in heavy-ion collisions. We report the two- and four-particle cumulants, v_{2}{2} and v_{2}{4}, for charged hadrons from U+U collisions at sqrts_{NN}=193 GeV and Au+Au collisions at sqrts_{NN}=200 GeV. Nearly fully overlapping collisions are selected based on the energy deposited by spectators in zero degree calorimeters (ZDCs). Within this sample, the observed dependence of v_{2}{2} on multiplicity demonstrates that ZDC information combined with multiplicity can preferentially select different overlap configurations in U+U collisions. We also show that v_{2} vs multiplicity can be better described by models, such as gluon saturation or quark participant models, that eliminate the dependence of the multiplicity on the number of binary nucleon-nucleon collisions.
