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  • Elliptic flow of electrons ...
    Agakishiev, G.; Ahammed, Z.; Aoyama, R.; Arkhipkin, D.; Behera, A.; Bielcik, J.; Bland, L. C.; Brandin, A. V.; Butterworth, J.; Campbell, J. M.; Chakaberia, I.; Chaloupka, P.; Crawford, H. J.; Dedovich, T. G.; Didenko, L.; Drachenberg, J. L.; Dunkelberger, L. E.; Fatemi, R.; Federic, P.; Federicova, P.; Fisyak, Y.; Garand, D.; He, L.; Heppelmann, S.; Huang, H. Z.; Huang, X.; Huang, B.; Huang, T.; Humanic, T. J.; Huo, P.; Igo, G.; Jowzaee, S.; Kalinkin, D.; Kauder, K.; Kechechyan, A.; Khan, Z.; Kikoła, D. P.; Kraishan, A. F.; Kvapil, J.; Lauret, J.; Lednicky, R.; Li, X.; Liu, F.; Lomnitz, M.; Matis, H. S.; Meehan, K.; Mei, J. C.; Miller, Z. W.; Nasim, Md; Nelson, J. M.; Odyniec, G.; Pak, R.; Perkins, C.; Pile, P.; Poskanzer, A. M.; Qiu, H.; Quintero, A.; Ramachandran, S.; Ray, R. L.; Reed, R.; Rehbein, M. J.; Ritter, H. G.; Roberts, J. B.; Romero, J. L.; Roth, J. D.; Sahoo, N. R.; Schmah, A. M.; Schmidke, W. B.; Seger, J.; Shah, N.; Singha, S.; Skoby, M. J.; Smirnov, N.; Song, L.; Stanislaus, T. D. S.; Sugiura, T.; Sun, X.; Tang, A. H.; Tlusty, D.; Todoroki, T.; Trentalange, S.; Ullrich, T.; Upsal, I.; Van Buren, G.; Videbæk, F.; Wissink, S. W.; Witt, R.; Xiao, Z. G.; Xu, N.; Xu, Q. H.; Yang, Y.; Yi, L.; Zbroszczyk, H.; Zhang, Z.; Zhang, X. P.; Zhang, S.; Zhang, J.; Zhao, J.; Zhou, L.; Zyzak, M.

    Physical review. C, 03/2017, Letnik: 95, Številka: 3
    Journal Article

    We present measurements of elliptic flow (v2) of electrons from the decays of heavy-flavor hadrons (eHF) by the STAR experiment. For Au+Au collisions at sNN=200 GeV we report v2, for transverse momentum (pT) between 0.2 and 7 GeV/c, using three methods: the event plane method (v2{EP}), two-particle correlations (v2{2}), and four-particle correlations (v2{4}). For Au+Au collisions at sNN=62.4 and 39 GeV we report v2{2} for pT < 2GeV/c. v2{2} and v2{4} are nonzero at low and intermediate pT at 200 GeV, and v2{2} is consistent with zero at low pT at other energies. The v2{2} at the two lower beam energies is systematically lower than at sNN=200 GeV for pT < 1GeV/c. This difference may suggest that charm quarks interact less strongly with the surrounding nuclear matter at those two lower energies compared to sNN=200 GeV.