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  • Azimuthal charged-particle ...
    Balewski, J; Barannikova, O; Barnby, L S; Baumgart, S; Bellwied, R; Betts, R R; Bichsel, H; Bland, L C; Bnzarov, I; Braidot, E; Bueltmann, S; Calderón de la Barca Sánchez, M; Cendejas, R; Cervantes, M C; Dash, S; DePhillips, M; Draper, J E; Efimov, L G; Engelage, J; Eun, L; Fachini, P; Fedorisin, J; Gangadharan, D R; Geromitsos, A; Ghazikhanian, V; Gordon, A; Grosnick, D; Harris, J W; Hoffman, A M; Hoffmann, G W; Huo, L; Iordanova, A; Jacobs, P; Jones, C L; Kapitan, J; Lednicky, R; Li, N; Liu, H; Liu, L; Longacre, R S; Ma, G L; Ma, Y G; Mahapatra, D P; Majka, R; Mall, O I; Manweiler, R; Markert, C; Masui, H; Matulenko, Yu A; McShane, T S; Minaev, N G; Mioduszewski, S; Morozov, D A; Nandi, B K; Nelson, J M; Pandit, Y; Panebratsev, Y; Pawlak, T; Plyku, D; Poljak, N; Poskanzer, A M; Pruneau, C; Raniwala, R; Redwine, R; Reed, R; Romero, J L; Rose, A; Seele, J; Seger, J; Shao, M; Sharma, M; Shi, S S; Simon, F; Singaraju, R N; Sorensen, P; Spinka, H M; Strikhanov, M; Sumbera, M; Takahashi, J; Tarini, L H; Tsai, O D; Ullrich, T; Vasiliev, A N; Viyogi, Y P; Voloshin, S A; Walker, M; Wang, F; Wang, J S; Wang, X; Westfall, G D; Witt, R; Wu, Y; Xu, N; Yepes, P; Yip, K; Zbroszczyk, H; Zhang, Y; Zhang, Z P; Zhong, C; Zuo, J X

    Physical review letters, 12/2009, Letnik: 103, Številka: 25
    Journal Article

    Parity-odd domains, corresponding to nontrivial topological solutions of the QCD vacuum, might be created during relativistic heavy-ion collisions. These domains are predicted to lead to charge separation of quarks along the system's orbital momentum axis. We investigate a three-particle azimuthal correlator which is a P even observable, but directly sensitive to the charge separation effect. We report measurements of charged hadrons near center-of-mass rapidity with this observable in Au + Au and Cu + Cu collisions at square root of s(NN) = 200 GeV using the STAR detector. A signal consistent with several expectations from the theory is detected. We discuss possible contributions from other effects that are not related to parity violation.