Transverse single-spin asymmetry of charged hadrons at forward and backward rapidity in polarized p plus p, p plus Al, and p plus Au collisions at sNN=200 GeV
N. J. Abdulameer,U. Acharya,C. Aidala,Y. Akiba,M. Alfred,V. Andrieux,N. Apadula,H. Asano,B. Azmoun,V. Babintsev,N. S. Bandara,K. N. Barish,S. Bathe,A. Bazilevsky,M. Beaumier,R. Belmont,A. Berdnikov,Y. Berdnikov,L. Bichon,B. Blankenship,D. S. Blau,J. S. Bok,V. Borisov,M. L. Brooks,J. Bryslawskyj,V. Bumazhnov,S. Campbell,V. Canoa Roman,R. Cervantes,M. Chiu,C. Y. Chi,I. J. Choi,J. B. Choi,Z. Citron,M. Connors,R. Corliss,Y. Corrales Morales,N. Cronin,M. Csanad,T. Csorgo,T. W. Danley,M. S. Daugherity,G. David,C. T. Dean,K. DeBlasio,K. Dehmelt,A. Denisov,A. Deshpande,E. J. Desmond,A. Dion,D. Dixit,V. Doomra,J. H. Do,A. Drees,K. A. Drees,J. M. Durham,A. Durum,H. En'yo,A. Enokizono,R. Esha,B. Fadem,W. Fan,N. Feege,D. E. Fields,M. Finger,M. Finger,D. Firak,D. Fitzgerald,S. L. Fokin,J. E. Frantz,A. Franz,A. D. Frawley,Y. Fukuda,P. Gallus,C. Gal,P. Garg,H. Ge,M. Giles,F. Giordano,Y. Goto,N. Grau,S. V. Greene,M. Grosse Perdekamp,T. Gunji,H. Guragain,T. Hachiya,J. S. Haggerty,K. I. Hahn,H. Hamagaki,H. F. Hamilton,J. Hanks,S. Y. Han,M. Harvey,S. Hasegawa,T. O. S. Haseler,T. K. Hemmick,X. He,J. C. Hill,K. Hill,A. Hodges,R. S. Hollis,K. Homma,B. Hong,T. Hoshino,N. Hotvedt,J. Huang,K. Imai,M. Inaba,A. Iordanova,D. Isenhower,D. Ivanishchev,B. V. Jacak,M. Jezghani,X. Jiang,Z. Ji,B. M. Johnson,D. Jouan,D. S. Jumper,J. H. Kang,D. Kapukchyan,S. Karthas,D. Kawall,A. V. Kazantsev,V. Khachatryan,A. Khanzadeev,A. Khatiwada,C. Kim,E. -J. Kim,M. Kim,T. Kim,D. Kincses,A. Kingan,E. Kistenev,J. Klatsky,P. Kline,T. Koblesky,D. Kotov,L. Kovacs,S. Kudo,B. Kurgyis,K. Kurita,Y. Kwon,J. G. Lajoie,D. Larionova,A. Lebedev,S. Lee,S. H. Lee,M. J. Leitch,Y. H. Leung,N. A. Lewis,S. H. Lim,M. X. Liu,X. Li,V. -R. Loggins,D. A. Loomis,K. Lovasz,D. Lynch,S. Lokos,T. Majoros,Y. I. Makdisi,M. Makek,V. I. Manko,E. Mannel,M. McCumber,P. L. McGaughey,D. McGlinchey,C. McKinney,M. Mendoza,A. C. Mignerey,A. Milov,D. K. Mishra,J. T. Mitchell,M. Mitrankova,Iu. Mitrankov,G. Mitsuka,S. Miyasaka,S. Mizuno,M. M. Mondal,P. Montuenga,T. Moon,D. P. Morrison,A. Muhammad,B. Mulilo,T. Murakami,J. Murata,K. Nagai,K. Nagashima,T. Nagashima,J. L. Nagle,M. I. Nagy,I. Nakagawa,K. Nakano,C. Nattrass,S. Nelson,T. Niida,R. Nouicer,N. Novitzky,T. Novak,G. Nukazuka,A. S. Nyanin,E. O'Brien,C. A. Ogilvie,J. Oh,J. D. Orjuela Koop,M. Orosz,J. D. Osborn,A. Oskarsson,G. J. Ottino,K. Ozawa,V. Pantuev,V. Papavassiliou,J. S. Park,S. Park,M. Patel,S. F. Pate,W. Peng,D. V. Perepelitsa,G. D. N. Perera,D. Yu. Peressounko,C. E. PerezLara,J. Perry,R. Petti,M. Phipps,C. Pinkenburg,R. P. Pisani,M. Potekhin,A. Pun,M. L. Purschke,P. V. Radzevich,N. Ramasubramanian,K. F. Read,D. Reynolds,V. Riabov,Y. Riabov,D. Richford,T. Rinn,S. D. Rolnick,M. Rosati,Z. Rowan,J. Runchey,A. S. Safonov,T. Sakaguchi,H. Sako,V. Samsonov,M. Sarsour,S. Sato,B. Schaefer,B. K. Schmoll,K. Sedgwick,R. Seidl,A. Sen,R. Seto,A. Sexton,D. Sharma,I. Shein,M. Shibata,T. -A. Shibata,K. Shigaki,M. Shimomura,T. Shioya,Z. Shi,P. Shukla,A. Sickles,C. L. Silva,D. Silvermyr,B. K. Singh,C. P. Singh,V. Singh,M. Slunecka,K. L. Smith,M. Snowball,R. A. Soltz,W. E. Sondheim,S. P. Sorensen,I. V. Sourikova,P. W. Stankus,S. P. Stoll,T. Sugitate,A. Sukhanov,T. Sumita,J. Sun,Z. Sun,J. Sziklai,R. Takahama,K. Tanida,M. J. Tannenbaum,S. Tarafdar,A. Taranenko,G. Tarnai,R. Tieulent,A. Timilsina,T. Todoroki,M. Tomasek,C. L. Towell,R. S. Towell,I. Tserruya,Y. Ueda,B. Ujvari,H. W. van Hecke,J. Velkovska,M. Virius,V. Vrba,N. Vukman,X. R. Wang,Z. Wang,Y. S. Watanabe,C. P. Wong,C. L. Woody,L. Xue,C. Xu,Q. Xu,S. Yalcin,Y. L. Yamaguchi,H. Yamamoto,A. Yanovich,I. Yoon,J. H. Yoo,I. E. Yushmanov,H. Yu,W. A. Zajc,A. Zelenski,L. Zou
PHYSICAL REVIEW D（2023）
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摘要
Reported here are transverse single-spin asymmetries (A(N)) in the production of charged hadrons as a function of transverse momentum (p(T)) and Feynman-x (x(F)) in polarized p(up arrow)+ p, p(up arrow) + Al, and p(up arrow) + Au collisions at root s(NN) = 200 GeV. The measurements have been performed at forward and backward rapidity (1.4 < |eta| < 2.4) over the range of 1.5 GeV=c < p(T) < 7.0 GeV/c and 0.04 < |x(F)| < 0.2. A nonzero asymmetry is observed for positively charged hadrons at forward rapidity (x(F) > 0) in p(up arrow) + p collisions, whereas the p(up arrow)+ Al and p. thorn Au results show smaller asymmetries. This finding provides new opportunities to investigate the origin of transverse single-spin asymmetries and a tool to study nuclear effects in p thorn A collisions.
