Measurement of transverse single-spin asymmetries forJ/ψproduction in polarizedp+pcollisions ats=200  GeV

A Adare,B Meredith,Y Berdnikov,A Caringi,J G Boissevain,R P Pisani,S Kametani,M Grosse Perdekamp,N N Ajitanand,K S Lee,E Vznuzdaev,W C Chang,G S Kyle,A Taketani,B Love,E Richardson,P Mikeš,T Liška,I Younus,C P Singh,J L Nagle,M Heffner,A Taranenko,D Hornback,D Mukhopadhyay,J Asai,J Hamblen,N Borggren,C Pinkenburg,L Baksay,S Rembeczki,M Virius,T Engelmore,T Ichihara,A Kravitz,J Ying,A Churyn,I Shein,J Murata,Z Conesa Del Valle,H Masui,M Naglis,Y Tsuchimoto,Y Ikeda,M J Leitch,E Stenlund,H Pereira,J Koster,K Tanida,K Nakano,H Al-Bataineh,H W Van Hecke,R Granier De Cassagnac,G Roche,A Enokizono,W E Sondheim,A K Purwar,V Bumazhnov,D P Morrison,V Baublis,C Oakley,J H Kang,S Zhou,S P Stoll,R S Towell,S Batsouli,K V Dharmawardane,G Baksay,V Dzhordzhadze,M Wysocki,A Dion,D Layton,M Gonin,J E Frantz,K Shoji,M Stepanov,E M Takagui,A S Nyanin,R Ichimiya,K Okada,O Drapier,A Berdnikov,Y I Makdisi,J Seele,M A L Leite,V Babintsev,N Means,B Azmoun,T C Awes,Y Tanaka,Z Fraenkel,M Proissl,R Bennett,T K Hemmick,K S Sim,O Zaudtke,M K Dayananda,V Papavassiliou,V L Rykov,M L Brooks,N Grau,K N Barish,H Gong,M Kasai,S Bathe,A Lebedev,C Baumann,S Chernichenko,P Tarján,K Sakashita,Y Akiba,J G Lajoie,C Vale,I J Choi,A Veicht,R Tanabe,F Matathias,J Newby,A Sukhanov,K M Kijima,Y Watanabe,M J Tannenbaum,J C Hill,Y Morino,M Chiu,E P Hartouni,L Mašek,M Togawa,R Seto,R Petti,K Kiriluk,J Hanks,R Lacey,S Dairaku,D Winter,M J Kweon,A Bazilevsky,D Isenhower,R Belmont,I Nakagawa,D Lynch,I Danchev,A V Kazantsev,T Horaguchi,D Ivanischev,J Sziklai,T Hester,S H Kim,W Holzmann,K Boyle,S F Pate,A Yanovich,I E Yushmanov,K Kurita,L Tomášek,J Imrek,A Isupov,O Dietzsch,V Cianciolo,A D Frawley,R A Soltz,M Mccumber,F Staley,Y Fukao,D Roach,C A Ogilvie,A Denisov,A Drees,A A Bickley,I Tserruya,A Kozlov,S Nagamiya,P Liebing,M Nihashi,D S Jumper,T Niita,H Valle,R Seidl,P L Mcgaughey,S Butsyk,S Sawada,J S Haggerty,C Silvestre,V Peresedov,R Yang,L Kochenda,E J Desmond,E Vazquez-Zambrano,Y Onuki,S Esumi,A Franz,P Chung,D Kawall,M Rosati,G R Young,L A Linden Levy,K O Eyser,M Issah,S Tarafdar,T V Moukhanova,A Ster,Y Riabov,Y Goto,Y Aramaki,W A Zajc,P Lichtenwalner,M Slunečka,A Durum,D M Lee,I Garishvili,T Kempel,I V Sourikova,S D Rolnick,E Kistenev,K Haruna,K Imai,F Kajihara,G David,M Ouchida,D Jouan,A Hadj Henni,A Král,P W Stankus,M Konno,B Sahlmueller,G Bunce,B Bassalleck,H Themann,D E Fields,S Afanasiev,Y Nakamiya,E T Atomssa,M Finger,M I Nagy,C L Woody,S Yokkaichi,T Murakami,T L Thomas,N Kamihara,B Komkov,S N White,K Das,R Pak,B M Johnson,R K Choudhury,K Sedgwick,B Fadem,L Aphecetche,A Deshpande,I Ravinovich,R Averbeck ,V Manko ,A P.t Palounek ,Á Kiss ,Jeongsu Bok ,M Csanád ,J Park ,Yue Shi Lai ,P Shukla ,A Rakotozafindrabe ,A Toia ,F Ellinghaus ,J Bhom ,M Nguyen ,V Vrba ,Y Kwon ,Daisuke Watanabe ,K S Joo ,K Shigaki ,C.-H Chen ,Y Iwanaga ,A Khanzadeev ,B Cole ,I H Park ,H.-Å Gustafsson ,K Watanabe ,E J Kim ,T Mibe ,B Chang ,K A Drees ,D J Kim ,D D’enterria ,M Donadelli ,V Riabov ,M Hohlmann ,A Glenn ,K F Read ,J Alexander ,G Grim ,K Karatsu ,K Miki ,A K Dubey ,B Lenzi ,С Сано ,D Thomas ,A Datta ,Y V Efremenko ,J Kapustinsky ,T Csörgõ ,S S.e Rosendahl ,H Liu ,V N Tram ,F Fleuret ,H J Moon ,C Y ,A Milov ,D Yu Peressounko ,A C Mignerey ,C A Aidala ,T Gunji ,J Lee ,R Vértesi ,A Malakhov ,B Hong ,S Fokin ,J.-C Peng ,H Qu ,T Fusayasu ,J L Charvet ,R Hayano ,J Rak ,H Al-Ta’ani ,Laurent D’orazio ,E Mannel ,K Reygers ,V K Singh ,Mei Bai ,X He ,P Rukoyatkin ,S Huang ,M Inaba ,T Isobe ,T Sato ,С Беликов ,J Choi ,H Borel ,G J Kunde ,M Connors ,H Torii ,Y Mao ,J Jia ,S Greene ,A K Mohanty ,B I Kim ,H Buesching ,A Basye ,M Oka ,P D Barnes ,D Dutta ,M Kawashima ,K Fujiwara ,D Blau ,E Haslum ,T Nakamura ,J L Klay ,D Silvermyr ,V Pantuev ,M Kurosawa ,C Suire ,S Oda ,S Sakai ,M Shimomura ,P Christiansen ,O Chvála ,D Sharma ,A Baldisseri ,K Yamaura ,X R Wang ,J T Mitchell ,Z H Citron ,Kazuo Aoki ,R Han ,R M Wright ,C Muñoz Camacho ,K B Lee ,M L Purschke ,M X Liu ,А Виноградов ,R Nouicer ,Jun Kikuchi ,S Campbell ,J Kamin ,K R Nakamura ,J Jin ,J P Wessels ,A M Sickles ,C A Rosen ,A Soldatov ,E Kinney ,Z Y You ,H Pei ,Wei Fang ,A Angerami ,H Iinuma ,T Sakaguchi ,E Kim ,H Hamagaki ,B V Jacak ,J Gösset ,V Semenov ,J M Durham ,A Litvinenko ,K Ozawa ,P Constantin ,E O’brien ,N Saito ,T J Jones ,C Maguire ,X Li ,C Zhang ,Y.-J Kim ,D H Kim ,N Apadula ,T Lee ,S P Sørensen ,J Velkovska ,H En’yo ,M Ishihara ,P Rosnet ,A Kim ,V Samsonov ,T Dahms ,X Jiang ,Y Miake ,C L Silva ,S K Park ,M D Malik ,T Chujo ,K I Hahn ,K Homma ,W J Park ,S Nam ,Christian Klein-Boesing ,T A Shibata ,T Sugitate ,W Xie ,B K Singh ,P Růžička ,S Taneja ,S Edwards ,A Semenov ,A Öskarsson ,M Mishra ,A Morreale ,Yasuhiro Tomita ,Y Yamaguchi ,L Zolin

doi:10.1103/physrevd.82.112008

Abstract

We report the first measurement of transverse single-spin asymmetries in J/ψ production from transversely polarized p+p collisions at s=200 GeV with data taken by the PHENIX experiment in 2006 and 2008. The measurement was performed over the rapidity ranges 1.2<|y|<2.2 and |y|<0.35 for transverse momenta up to 6 GeV/c. J/ψ production at the Relativistic Heavy Ion Collider is dominated by processes involving initial-state gluons, and transverse single-spin asymmetries of the J/ψ can provide access to gluon dynamics within the nucleon. Such asymmetries may also shed light on the long-standing question in QCD of the J/ψ production mechanism. Asymmetries were obtained as a function of J/ψ transverse momentum and Feynman-x, with a value of −0.086±0.026stat±0.003syst in the forward region. This result suggests possible nonzero trigluon correlation functions in transversely polarized protons and, if well defined in this reaction, a nonzero gluon Sivers distribution function.Received 27 September 2010DOI:https://doi.org/10.1103/PhysRevD.82.112008© 2010 The American Physical Society

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