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Adkins, J K; Aparin, A; Aschenauer, E C; Bhati, A K; Bielcik, J; Butterworth, J; Calderón de la Barca Sánchez, M; Chatterjee, A; Chen, X; Cherney, M; Csanad, M; Derevschikov, A A; Didenko, L; Dilks, C; Efimov, L G; Esha, R; Esumi, S; Eyser, O; Fedorisin, J; Flores, C E; Fulek, L; Gagliardi, C A; Hamed, A; Heppelmann, S; Hirsch, A; Huang, H Z; Huo, P; Igo, G; Jiang, K; Ju, X; Judd, E G; Kabana, S; Kalinkin, D; Ke, H W; Kim, C; Kisiel, A; Kraishan, A F; Krauth, L; Liang, Y; Liu, P; Liu, Z; Llope, W J; Ma, Y G; Magdy, N; Majka, R; Matonoha, O; Mioduszewski, S; Mishra, D; Mohanty, B; Nasim, Md; Nelson, J M; Niida, T; Panebratsev, Y; Porter, J; Pruthi, N K; Ramachandran, S; Reed, R; Ritter, H G; Rogachevskiy, O V; Romero, J L; Salur, S; Schambach, J; Schmitz, N; Seck, F; Sergeeva, M; Shen, F; Shou, Q Y; Singh, J; Singha, S; Smirnov, N; Stanislaus, T D S; Sugiura, T; Sumbera, M; Sun, X; Sun, Y; Surrow, B; Szymanski, P; Tang, Z; Timmins, A R; Tokarev, M; Upsal, I; Vassiliev, I; Voloshin, S A; Wang, P; Wang, Y; Wen, L; Wu, Y; Xu, Z; Yang, C; Yang, S; Ye, Z; Yip, K; Yu, N; Zbroszczyk, H; Zhang, J; Zhang, S; Zhang, Y; Zhang, Z; Zhao, J; Zhong, C
Physical review letters, 2019-May-03, Letnik: 122, Številka: 17Journal Article
The first (v_{1}^{fluc}), second (v_{2}), and third (v_{3}) harmonic coefficients of the azimuthal particle distribution at midrapidity are extracted for charged hadrons and studied as a function of transverse momentum (p_{T}) and mean charged particle multiplicity density ⟨N_{ch}⟩ in U+U (sqrts_{NN}=193 GeV), Au+Au, Cu+Au, Cu+Cu, d+Au, and p+Au collisions at sqrts_{NN}=200 GeV with the STAR detector. For the same ⟨N_{ch}⟩, the v_{1}^{fluc} and v_{3} coefficients are observed to be independent of the collision system, while v_{2} exhibits such a scaling only when normalized by the initial-state eccentricity (ϵ_{2}). The data also show that ln(v_{2}/ϵ_{2}) scales linearly with ⟨N_{ch}⟩^{-1/3}. These measurements provide insight into initial-geometry fluctuations and the role of viscous hydrodynamic attenuation on v_{n} from small to large collision systems.
