Nuclear Dependence of the Transverse-Single-Spin Asymmetry for Forward Neutron Production in Polarized p plus A Collisions at √SNN=200 GeV

Aidala, C.; Akiba, Y.; Alfred, M.; Andrieux, V.; Aoki, K.; Apadula, N.; Asano, H.; Ayuso, C.; Azmoun, B.; Babintsev, V.; Bagoly, A.; Bandara, N.; Barish, K.; Bathe, S.; Bazilevsky, A.; Beaumier, M.; Belmont, R.; Berdnikov, A.; Berdnikov, Y.; Blau, D.; Boer, M.; Bok, J.; Brooks, M.; Bryslawskyj, J.; Bumazhnov, V.; Butler, C.; Campbell, S.; Roman, V.; Cervantes, R.; Chi, C.; Chiu, M.; Choi, I.; Choi, J.; Citron, Z.; Connors, M.; Cronin, N.; Csanad, M.; Csorgo, T.; Danley, T.; Daugherity, M.; David, G.; DeBlasio, K.; Dehmelt, K.; Denisov, A.; Deshpande, A.; Desmond, E.; Dion, A.; Dixit, D.; Do, J.; Drees, A.; Drees, K.; Dumancic, M.; Durham, J.; Durum, A.; Elder, T.; Enokizono, A.; En'yo, H.; Esumi, S.; Fadem, B.; Fan, W.; Feege, N.; Fields, D.; Finger, M.; Finger, M.; Fokin, S.; Frantz, J.; Franz, A.; Frawley, A.; Fukuda, Y.; Gal, C.; Gallus, P.; Garg, P.; Ge, H.; Giordano, F.; Goto, Y.; Grau, N.; Greene, S.; Perdekamp, M.; Gunji, T.; Guragain, H.; Hachiya, T.; Haggerty, J.; Hahn, K.; Hamagaki, H.; Hamilton, H.; Han, S.; Hanks, J.; Hasegawa, S.; Haseler, T.; He, X.; Hemmick, T.; Hill, J.; Hill, K.; Hollis, R.; 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, B.; Jezghani, M.; Ji, Z.; Jiang, X.; Johnson, B.; Jorjadze, V.; Jouan, D.; Jumper, D.; Kang, J.; Kapukchyan, D.; Karthas, S.; Kawall, D.; Kazantsev, A.; Khachatryan, V.; Khanzadeev, A.; Kim, C.; Kim, D.; Kim, E.; Kim, M.; Kim, M.; Kincses, D.; Kistenev, E.; Klatsky, J.; Kline, P.; Koblesky, T.; Kotov, D.; Kudo, S.; Kurita, K.; Kwon, Y.; Lajoie, J.; Lallow, E.; Lebedev, A.; Lee, S.; Leitch, M.; Leung, Y.; Lewis, N.; Li, X.; Lim, S.; Liu, L.; Liu, M.; Loggins, V.; Lokos, S.; Lovasz, K.; Lynch, D.; Majoros, T.; Makdisi, Y.; Makek, M.; Malaev, M.; Manko, V.; Mannel, E.; Masuda, H.; McCumber, M.; McGaughey, P.; McGlinchey, D.; McKinney, C.; Mendoza, M.; Metzger, W.; Mignerey, A.; Mihalik, D.; Milov, A.; Mishra, D.; Mitchell, J.; Mitsuka, G.; Miyasaka, S.; Mizuno, S.; Montuenga, P.; Moon, T.; Morrison, D.; Morrow, S.; Murakami, T.; Murata, J.; Nagai, K.; Nagashima, K.; Nagashima, T.; Nagle, J.; Nagy, M.; Nakagawa, I.; Nakagomi, H.; Nakano, K.; Nattrass, C.; Niida, T.; Nouicer, R.; Novak, T.; Novitzky, N.; Novotny, R.; Nyanin, A.; O'Brien, E.; Ogilvie, C.; Koop, J.; Osborn, J.; Oskarsson, A.; Ottino, G.; Ozawa, K.; Pantuev, V.; Papavassiliou, V.; Park, J.; Park, S.; Pate, S.; Patel, M.; Peng, W.; Perepelitsa, D.; Perera, G.; Peressounko, D.; PerezLara, C.; Perry, J.; Petti, R.; Phipps, M.; Pinkenburg, C.; Pisani, R.; Pun, A.; Purschke, M.; Radzevich, P.; Read, K.; Reynolds, D.; Riabov, V.; Riabov, Y.; Richford, D.; Rinn, T.; Rolnick, S.; Rosati, M.; Rowan, Z.; Runchey, J.; Safonov, A.; Sakaguchi, T.; Sako, H.; Samsonov, V.; Sarsour, M.; Sato, K.; Sato, S.; Schaefer, B.; Schmoll, B.; Sedgwick, K.; Seidl, R.; Sen, A.; Seto, R.; Sexton, A.; Sharma, D.; Shein, I.; Shibata, T.; Shigaki, K.; Shimomura, M.; Shioya, T.; Shukla, P.; Sickles, A.; Silva, C.; Silvermyr, D.; Singh, B.; Singh, C.; Singh, V.; Skoby, M.; Slunecka, M.; Smith, K.; Snowball, M.; Soltz, R.; Sondheim, W.; Sorensen, S.; Sourikova, I.; Stankus, P.; Stoll, S.; Sugitate, T.; Sukhanov, A.; Sumita, T.; Sun, J.; Syed, S.; Sziklai, J.; Takeda, A.; Tanida, K.; Tannenbaum, M.; Tarafdar, S.; Taranenko, A.; Tarnai, G.; Tieulent, R.; Timilsina, A.; Todoroki, T.; Tomasek, M.; Towell, C.; Towell, R.; Tserruya, I.; Ueda, Y.; Ujvari, B.; Van Hecke, H.; Vazquez-Carson, S.; Velkovska, J.; Virius, M.; Vrba, V.; Vukman, N.; Wang, X.; Wang, Z.; Watanabe, Y.; Watanabe, Y.; Wong, C.; Woody, C.; Xu, C.; Xu, Q.; Xue, L.; Yalcin, Serpil; Yamaguchi, Y.; Yamamoto, H.; Yanovich, A.; Yin, P.; Yoo, J.; Yoon, I.; Yu, H.; Yushmanov, I.; Zajc, W.; Zelenski, A.; Zharko, S.; Zou, L.

doi:10.1103/physrevlett.120.022001

Nuclear Dependence of the Transverse-Single-Spin Asymmetry for Forward Neutron Production in Polarized p plus A Collisions at √SNN=200 GeV

Aidala C., Akiba Y., Alfred M., Andrieux V., Aoki K., Apadula N., ...Daha Fazla

PHYSICAL REVIEW LETTERS, cilt.120, sa.2, 2018 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 120 Sayı: 2
Basım Tarihi: 2018
Doi Numarası: 10.1103/physrevlett.120.022001
Dergi Adı: PHYSICAL REVIEW LETTERS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Yıldız Teknik Üniversitesi Adresli: Hayır

Özet

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.

Nuclear Dependence of the Transverse-Single-Spin Asymmetry for Forward Neutron Production in Polarized <i>p</i> plus <i>A</i> Collisions at √<i>S<sub>NN</sub></i>=200 GeV

Özet