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  • Nuclear Dependence of the T...
    Akiba, Y; Alfred, M; Asano, H; Bathe, S; Blau, D S; Campbell, S; Canoa Roman, V; Cervantes, R; Chiu, M; Cronin, N; Csanád, M; Danley, T W; David, G; DeBlasio, K; Dehmelt, K; Desmond, E J; Dion, A; Dixit, D; Drees, K A; Enokizono, A; Esumi, S; Feege, N; Fields, D E; Franz, A; Gamez, E A; Ge, H; Goto, Y; Hahn, K I; Haseler, T O S; He, X; Hodges, A; Hollis, R S; Hong, B; Huang, J; Imai, K; Iordanova, A; Ji, Z; Jouan, D; Kapukchyan, D; Karthas, S; Khachatryan, V; Khanzadeev, A; Kline, P; Koblesky, T; Lajoie, J G; Lebedev, A; Leitch, M J; Lewis, N A; Lim, S H; Liu, M X; Lökös, S; Makdisi, Y I; McKinney, C; Mignerey, A C; Milov, A; Mishra, D K; Miyasaka, S; Mizuno, S; Moon, T; Murakami, T; Murata, J; Nagle, J L; Nakano, K; Nattrass, C; Niida, T; Nouicer, R; Novák, T; Orjuela Koop, J D; Ozawa, K; Papavassiliou, V; Patel, M; Perepelitsa, D V; Perera, G D N; Pisani, R P; Purschke, M L; Radzevich, P V; Reynolds, D; Safonov, A S; Sakaguchi, T; Sato, S; Sen, A; Sexton, A; Shigaki, K; Shioya, T; Silva, C L; Singh, B K; Sumita, T; Sun, Z; Tanida, K; Tomášek, M; Towell, C L; Ueda, Y; Velkovska, J; Virius, M; Wang, Z; Yamaguchi, Y L; Yoo, J H; Yushmanov, I E; Zelenski, A; Zhai, Y

    Physical review letters, 09/2019, Letnik: 123, Številka: 12
    Journal Article

    We report on the nuclear dependence of transverse single-spin asymmetries (TSSAs) in the production of positively charged hadrons in polarized p↑+p, p↑+Al, and p↑+Au collisions at sNN=200  GeV. The measurements have been performed at forward rapidity (1.4<η<2.4) over the range of transverse momentum (1.8<pT<7.0  GeV/c) and Feynman x (0.1<xF<0.2). We observed positive asymmetries for positively charged hadrons in p↑+p collisions, and significantly reduced asymmetries in p↑+A collisions. These results reveal a nuclear dependence of TSSAs for charged-hadron production in a regime where perturbative techniques are applicable. These results provide new opportunities to use p↑+A collisions as a tool to investigate the rich phenomena behind TSSAs in hadronic collisions and to use TSSAs as a new handle in studying small-system collisions.