Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV uri icon

abstract

  • 2018 American Physical Society. The azimuthal anisotropic flow of identified and unidentified charged particles has been systematically studied in Cu+Au collisions at sNN=200 GeV for harmonics n=1-4 in the pseudorapidity range ||<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 sNN=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 pseudorapidity values, i.e., the Cu-going direction. The mean transverse momentum projected onto the spectator plane (px) in Cu+Au collision also exhibits approximately linear dependence on pseudorapidity with the intercept at about -0.4 (shifted from zero in the Au-going direction), closer to the rapidity of the Cu+Au system center of mass. The observed dependencies find a natural explanation in a picture of the directed flow originating partly due the "tilted source" and partly due to the asymmetry in the initial density distribution. A charge dependence of (px) was also observed in Cu+Au collisions, consistent with 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 sNN=2.76 TeV, indicating a similar magnitude of dipolelike 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 multiphase transport model. For all harmonics with n2 we observe an approximate scaling of vn with the number of constituent quarks; this scaling works as well in Cu+Au collisions as it does in Au+Au collisions.

published proceedings

  • PHYSICAL REVIEW C

altmetric score

  • 0.5

author list (cited authors)

  • Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwa, M. M., Ahammed, Z., ... Zyzak, M.

citation count

  • 22

complete list of authors

  • Adamczyk, L||Adams, JR||Adkins, JK||Agakishiev, G||Aggarwa, MM||Ahammed, Z||Ajitanand, NN||Alekseev, I||Anderson, DM||Aoyama, R||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||Zyzak, M

publication date

  • July 2018