Nuclear Dependence of the Transverse-Single-Spin Asymmetry for Forward Neutron Production in Polarized p+A Collisions at sqrt[s_{NN}]=200  GeV. Article

Aidala, C, Akiba, Y, Alfred, M et al. (2018). Nuclear Dependence of the Transverse-Single-Spin Asymmetry for Forward Neutron Production in Polarized p+A Collisions at sqrt[s_{NN}]=200  GeV. . PHYSICAL REVIEW LETTERS, 120(2), 022001. 10.1103/physrevlett.120.022001

cited authors

  • Aidala, C; Akiba, Y; Alfred, M; Andrieux, V; Aoki, K; Apadula, N; Asano, H; Ayuso, C; Azmoun, B; Babintsev, V; Bagoly, A; Bandara, NS; Barish, KN; Bathe, S; Bazilevsky, A; Beaumier, M; Belmont, R; Berdnikov, A; Berdnikov, Y; Blau, DS; Boer, M; Bok, JS; Brooks, ML; Bryslawskyj, J; Bumazhnov, V; Butler, C; Campbell, S; Canoa Roman, V; Cervantes, R; Chi, CY; Chiu, M; Choi, IJ; Choi, JB; Citron, Z; Connors, M; Cronin, N; Csanád, M; Csörgő, T; Danley, TW; Daugherity, MS; David, G; DeBlasio, K; Dehmelt, K; Denisov, A; Deshpande, A; Desmond, EJ; Dion, A; Dixit, D; Do, JH; Drees, A; Drees, KA; Dumancic, M; Durham, JM; Durum, A; Elder, T; Enokizono, A; En'yo, H; Esumi, S; Fadem, B; Fan, W; Feege, N; Fields, DE; Finger, M; Finger, M; Fokin, SL; Frantz, JE; Franz, A; Frawley, AD; Fukuda, Y; Gal, C; Gallus, P; Garg, P; Ge, H; Giordano, F; Goto, Y; Grau, N; Greene, SV; Grosse Perdekamp, M; Gunji, T; Guragain, H; Hachiya, T; Haggerty, JS; Hahn, KI; Hamagaki, H; Hamilton, HF; Han, SY; Hanks, J; Hasegawa, S; Haseler, TOS; He, X; Hemmick, TK; Hill, JC; Hill, K; Hollis, RS; Homma, K; Hong, B; Hoshino, T; Hotvedt, N; Huang, J; Huang, S; Imai, K; Imrek, J; Inaba, M; Iordanova, A; Isenhower, D; Ito, Y; Ivanishchev, D; Jacak, BV; Jezghani, M; Ji, Z; Jiang, X; Johnson, BM; Jorjadze, V; Jouan, D; Jumper, DS; Kang, JH; Kapukchyan, D; Karthas, S; Kawall, D; Kazantsev, AV; Khachatryan, V; Khanzadeev, A; Kim, C; Kim, DJ; Kim, E-J; Kim, M; Kim, MH; Kincses, D; Kistenev, E; Klatsky, J; Kline, P; Koblesky, T; Kotov, D; Kudo, S; Kurita, K; Kwon, Y; Lajoie, JG; Lallow, EO; Lebedev, A; Lee, S; Leitch, MJ; Leung, YH; Lewis, NA; Li, X; Lim, SH; Liu, LD; Liu, MX; Loggins, V-R; Lökös, S; Lovasz, K; Lynch, D; Majoros, T; Makdisi, YI; Makek, M; Malaev, M; Manko, VI; Mannel, E; Masuda, H; McCumber, M; McGaughey, PL; McGlinchey, D; McKinney, C; Mendoza, M; Metzger, WJ; Mignerey, AC; Mihalik, DE; Milov, A; Mishra, DK; Mitchell, JT; Mitsuka, G; Miyasaka, S; Mizuno, S; Montuenga, P; Moon, T; Morrison, DP; Morrow, SIM; Murakami, T; Murata, J; Nagai, K; Nagashima, K; Nagashima, T; Nagle, JL; Nagy, MI; Nakagawa, I; Nakagomi, H; Nakano, K; Nattrass, C; Niida, T; Nouicer, R; Novák, T; Novitzky, N; Novotny, R; Nyanin, AS; O'Brien, E; Ogilvie, CA; Orjuela Koop, JD; Osborn, JD; Oskarsson, A; Ottino, GJ; Ozawa, K; Pantuev, V; Papavassiliou, V; Park, JS; Park, S; Pate, SF; Patel, M; Peng, W; Perepelitsa, DV; Perera, GDN; Peressounko, D Yu; PerezLara, CE; Perry, J; Petti, R; Phipps, M; Pinkenburg, C; Pisani, RP; Pun, A; Purschke, ML; Radzevich, PV; Read, KF; Reynolds, D; Riabov, V; Riabov, Y; Richford, D; Rinn, T; Rolnick, SD; Rosati, M; Rowan, Z; Runchey, J; Safonov, AS; Sakaguchi, T; Sako, H; Samsonov, V; Sarsour, M; Sato, K; Sato, S; Schaefer, B; Schmoll, BK; Sedgwick, K; Seidl, R; Sen, A; Seto, R; Sexton, A; Sharma, D; Shein, I; Shibata, T-A; Shigaki, K; Shimomura, M; Shioya, T; Shukla, P; Sickles, A; Silva, CL; Silvermyr, D; Singh, BK; Singh, CP; Singh, V; Skoby, MJ; Slunečka, M; Smith, KL; Snowball, M; Soltz, RA; Sondheim, WE; Sorensen, SP; Sourikova, IV; Stankus, PW; Stoll, SP; Sugitate, T; Sukhanov, A; Sumita, T; Sun, J; Syed, S; Sziklai, J; Takeda, A; Tanida, K; Tannenbaum, MJ; Tarafdar, S; Taranenko, A; Tarnai, G; Tieulent, R; Timilsina, A; Todoroki, T; Tomášek, M; Towell, CL; Towell, RS; Tserruya, I; Ueda, Y; Ujvari, B; van Hecke, HW; Vazquez-Carson, S; Velkovska, J; Virius, M; Vrba, V; Vukman, N; Wang, XR; Wang, Z; Watanabe, Y; Watanabe, YS; Wong, CP; Woody, CL; Xu, C; Xu, Q; Xue, L; Yalcin, S; Yamaguchi, YL; Yamamoto, H; Yanovich, A; Yin, P; Yoo, JH; Yoon, I; Yu, H; Yushmanov, IE; Zajc, WA; Zelenski, A; Zharko, S; Zou, L; PHENIX Collaboration

authors

abstract

  • During 2015, the Relativistic Heavy Ion Collider (RHIC) provided collisions of transversely polarized protons with Au and Al nuclei for the first time, enabling the exploration of transverse-single-spin asymmetries with heavy nuclei. Large single-spin asymmetries in very forward neutron production have been previously observed in transversely polarized p+p collisions at RHIC, and the existing theoretical framework that was successful in describing the single-spin asymmetry in p+p collisions predicts only a moderate atomic-mass-number (A) dependence. In contrast, the asymmetries observed at RHIC in p+A collisions showed a surprisingly strong A dependence in inclusive forward neutron production. The observed asymmetry in p+Al collisions is much smaller, while the asymmetry in p+Au collisions is a factor of 3 larger in absolute value and of opposite sign. The interplay of different neutron production mechanisms is discussed as a possible explanation of the observed A dependence.

publication date

  • January 1, 2018

published in

keywords

  • PHENIX Collaboration

Digital Object Identifier (DOI)

Medium

  • Print

start page

  • 022001

volume

  • 120

issue

  • 2