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  • Beam-energy dependence of t...
    Adkins, J K; Agakishiev, G; Aggarwal, M M; Aschenauer, E C; Averichev, G S; Bellwied, R; Bhati, A K; Bielcik, J; Brandin, A V; Burton, T P; Butterworth, J; Calderón de la Barca Sánchez, M; Cebra, D; Chattopadhyay, S; Christie, W; Das, S; Dhamija, S; di Ruzza, B; Dong, X; Engelage, J; Fazio, S; Fedorisin, J; Geurts, F; Gibson, A; Gliske, S; Greiner, L; Gunarathne, D S; Guo, Y; Gupta, S; Hoffmann, G W; Huang, B; Huck, P; Igo, G; Kechechyan, A; Khan, Z H; Kisel, I; Kotchenda, L; Kulakov, I; Lee, J H; Li, C; Lisa, M A; Liu, F; Lomnitz, M; Majka, R; Margetis, S; McShane, T S; Minaev, N G; Mioduszewski, S; Mohanty, B; Morozov, D A; Nandi, B K; Odyniec, G; Ohlson, A; Okorokov, V; Olvitt, Jr, D L; Page, B S; Pan, Y X; Pandit, Y; Pei, H; Perkins, C; Peryt, W; Pile, P; Planinic, M; Porter, J; Pruthi, N K; Qiu, H; Quintero, A; Ramachandran, S; Riley, C K; Romero, J L; Ruan, L; Rusnak, J; Sandweiss, J; Sangaline, E; Sarkar, A; Schmah, A M; Schmidke, W B; Shi, S S; Skoby, M J; Smirnov, D; Solanki, D; Stringfellow, B; Thomas, J H; Tlusty, D; Trentalange, S; Tribedy, P; Tsai, O D; Ullrich, T; van Nieuwenhuizen, G; Wada, M; Wang, F; Wang, Y; Wieman, H; Wissink, S W; Xu, Q H; Yan, W; Yang, C; Yi, L; Zhu, Y H; Zoulkarneeva, Y

    Physical review letters, 2014-Apr-25, Volume: 112, Issue: 16
    Journal Article

    Rapidity-odd directed flow (v1) measurements for charged pions, protons, and antiprotons near midrapidity (y=0) are reported in sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider. At intermediate impact parameters, the proton and net-proton slope parameter dv1/dy|y=0 shows a minimum between 11.5 and 19.6 GeV. In addition, the net-proton dv1/dy|y=0 changes sign twice between 7.7 and 39 GeV. The proton and net-proton results qualitatively resemble predictions of a hydrodynamic model with a first-order phase transition from hadronic matter to deconfined matter, and differ from hadronic transport calculations.