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Adamczyk, L, Adams, JR, Adkins, JK, Agakishiev, G, Aggarwa, MM, Ahammed, Z, Ajitanand, NN, Alekseev, I, Anderson, DM, Aoyama, R et al (show 337 more authors) , Aparin, A, Arkhipkin, D, Aschenauer, EC, Ashraf, MU, Attri, A, Averichev, GS, Bai, X, Bairathi, V, Barish, K, Behera, A, Bellwied, R, Bhasin, A, Bhati, AK, Bhattarai, P, Bielcik, J, Bielcikova, J, Bland, LC, Bordyuzhin, IG, Boucheti, J, Brandenburg, JD, Brandin, AV, Brown, D, Bryslawskyj, J, Bunzarov, I, Butterworth, J, Caines, H, Sanchez, M Calderon de la Barca, Campbell, JM, Cebra, D, Chakaberia, I, Chaloupka, P, Chang, Z, Chankova-Bunzarova, N, Chatterjee, A, Chattopadhyay, S, Chen, X, Chen, JH, Cheng, J, Cherney, M, Christie, W, Contin, G, Crawford, HJ, Das, S, Dedovich, TG, Deng, J, Deppner, IM, Derevschikov, AA, Didenko, L, Dilks, C, Dong, X, Drachenberg, JL, Draper, JE, Dunlop, JC, Efimov, LG, Elsey, N, Engelage, J, Eppley, G, Esha, R, Esumi, S, Evdokimov, O, Ewigleben, J, Eyser, O, Fatemi, R, Fazio, S, Federic, P, Federicova, P, Fedorisin, J, Feng, Z, Filipi, P, Finch, E, Fisyak, Y, Flores, CE, Fujita, J, Fulek, L, Gagliardi, CA, Geurts, F, Gibson, A, Girard, M, Grosnick, D, Gunarathne, DS, Guo, Y, Gupta, A, Guryn, W, Hamad, AI, Hamed, A, Harlenderova, A, Harris, JW, He, L, Heppelmann, S, Herrmann, N, Hirsch, A, Horvat, S, Huang, X, Huang, HZ, Huang, T, Huang, B, Humanic, TJ, Huo, P, Igo, G, Jacobs, WW, Jentsch, A, Jia, J, Jiang, K, Jowzaee, S, Judd, EG, Kabana, S, Kalinkin, D, Kang, K, Kapukchyan, D, Kauder, K, Ke, HW, Keane, D, Kechechyan, A, Khan, Z, Kikola, DP, Kim, C, Kisel, I, Kisiel, A, Kochenda, L, Kocmanek, M, Kollegger, T, Kosarzewski, LK, Kraishan, AF, Krauth, L, Kravtsov, P, Krueger, K, Kulathunga, N, Kumar, L, Kvapil, J, Kwasizur, JH, Lacey, R, Landgraf, JM, Landry, KD, Lauret, J, Lebedev, A, Lednicky, R, Lee, JH, Lee, W, Li, C, Li, X, Li, Y, Lidrych, J, Lin, T, Lisa, MA, Liu, F, Liu, Y, Liu, P, Liu, H, Ljubicic, T, Llope, WJ, Lomnitz, M, Longacre, RS, Luo, S, Luo, X, Ma, GL, Ma, R, Ma, YG, Ma, L, Magdy, N, Majka, R, Mallick, D, Margetis, S, Markert, C, Matis, HS, Mayes, D, Meehan, K, Mei, JC, Miller, ZW, Minaev, NG, Mioduszewski, S, Mishra, D, Mizuno, S, Mohanty, B, Mondal, MM, Morozov, DA, Mustafa, MK, Nasim, Md, Nayak, TK, Nelson, JM, Nemes, DB, Nie, M, Nigmatkulov, G, Niida, T, Nogach, LV, Nonaka, T, Nurushev, SB, Odyniec, G, Ogawa, A, Oh, K, Okorokov, VA, Olvitt, D Jr, Page, BS, Pak, R, Pandit, Y, Panebratsev, Y, Pawlik, B, Pei, H, Perkins, C, Pluta, J, Poniatowska, K, Porter, J, Posik, M, Poskanzer, AM, Pruthii, NK, Przybycien, M, Putschke, J, Quintero, A, Ramachandran, S, Ray, RL, Reed, R, Rehbein, MJ, Ritter, HG, Roberts, JB, Rogachevskiy, OV, Romero, JL, Roth, JD, Ruan, L, Rusnak, J, Rusnakova, O, Sahoo, NR, Sahu, PK, Salur, S, Sandweiss, J, Saur, M, Schambach, J, Schmah, AM, Schmidke, WB, Schmitz, N, Schweid, BR, Seger, J, Sergeeva, M, Seto, R, Seyboth, P, Shah, N, Shahaliev, E, Shanmuganathan, PV, Shao, M, Shen, WQ, Shi, SS, Shi, Z, Shou, QY, Sichtermann, EP, Sikora, R, Simko, M, Singha, S, Skoby, MJ, Smirnov, N, Smirnov, D, Solyst, W, Sorensen, P, Spinka, HM, Srivastava, B, Stanislaus, TDS, Stewart, DJ, Strikhanov, M, Stringfellow, B, Suaide, AAP, Sugiura, T, Sumbera, M, Summa, B, Sun, X, Sun, Y, Sun, XM, Surrow, B, Svirida, DN, Tang, Z, Tang, AH, Taranenko, A, Tarnowsky, T, Tawfik, A, Thader, J, Thomas, JH, Timmins, AR, Tlusty, D, Todoroki, T, Tokarev, M, Trentalange, S, Tribble, RE, Tribedy, P, Tripathy, SK, Trzeciak, BA, Tsai, OD, Tu, B, Ullrich, T, Underwood, DG, Upsal, I, Van Buren, G, Van Nieuwenhuizen, G, Vasiliev, AN, Videbaek, F, Vokal, S, Voloshin, SA, Vossen, A, Wang, G, Wang, F, Wang, Y, Webb, G, Webb, JC, Wen, L, Westfall, GD, Wieman, H, Wissink, SW, Witt, R, Wu, Y, Xiao, ZG, Xie, G, Xie, W, Xu, QH, Xu, YF, Xu, J, Xu, N, Xu, Z, Yang, C, Yang, S, Yang, Q, Yang, Y, Ye, Z, Yi, L, Yip, K, Yoo, I-K, Yu, N, Zbroszczyk, H, Zha, W, Zhang, JB, Zhang, J, Zhang, S, Zhang, L, Zhang, XP, Zhang, Z, Zhang, Y, Zhao, J, Zhong, C, Zhou, C, Zhou, L, Zhu, X, Zhu, Z and Zyzak, M
(2018)
Azimuthal anisotropy in Cu plus Au collisions at √<i>s<sub>NN</sub></i>=200 GeV.
PHYSICAL REVIEW C, 98 (1).
014915-.
Abstract
The azimuthal anisotropic flow of identified and unidentified charged
particles has been systematically studied in Cu+Au collisions at
$\sqrt{s_{_{NN}}}$ = 200 GeV for harmonics $n=$ 1-4 in the pseudorapidity range
$|\eta|<1$. The directed flow in Cu+Au collisions is compared with the
rapidity-odd and, for the first time, the rapidity-even components of charged
particle directed flow in Au+Au collisions at $\sqrt{s_{_{NN}}}$ = 200~GeV. The
slope of the directed flow pseudorapidity dependence in Cu+Au collisions is
found to be similar to that in Au+Au collisions, with the intercept shifted
toward positive $\eta$ values, i.e., the Cu-going direction. The mean
transverse momentum projected onto the spectator plane, $\langle p_x\rangle$,
in Cu+Au collision also exhibits approximately linear dependence on $\eta$ with
the intercept at about $\eta\approx-0.4$, closer to the rapidity of the Cu+Au
system center-of-mass. The observed dependencies find natural explanation in a
picture of the directed flow originating partly due the "tilted source" and
partly due to the rapidity dependent asymmetry in the initial density
distribution. Charge-dependence of the $\langle p_x\rangle$ was also observed
in Cu+Au collisions, indicating an effect of the initial electric field created
by charge difference of the spectator protons in two colliding nuclei. The
rapidity-even component of directed flow in Au+Au collisions is close to that
in Pb+Pb collisions at $\sqrt{s_{_{NN}}}$ = 2.76 TeV, indicating a similar
magnitude of dipole-like fluctuations in the initial-state density
distribution. Higher harmonic flow in Cu+Au collisions exhibits similar trends
to those observed in Au+Au and Pb+Pb collisions and is qualitatively reproduced
by a viscous hydrodynamic model and a multi-phase transport model. For all
harmonics with $n\ge2$ we observe an approximate scaling of $v_n$ with the
number of constituent quarks.
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