Centrality Dependence ofπ0andηProduction at Large Transverse Momentum insNN=200  GeVd+AuCollisions

S S Adler,L Kochenda,V Bumazhnov,M Inuzuka,A V Kazantsev,B M Johnson,H Delagrange,M J Kweon,M J Tannenbaum,S Yokkaichi,S Chernichenko,B Komkov,C H Kuberg,A Ster,R K Choudhury,J Chiba,D Mukhopadhyay,M J Leitch,K Tanida,F K Wohn,Y I Makdisi,E Stenlund,K Imai,C Pinkenburg,Y Fukao,H Pereira,D Bucher,A Franz,N Bruner,S Mioduszewski,K N Barish,A Devismes,J M Heuser,Y Tanaka,M Chiu,A Pierson,S Butsyk,T K Shea,A Drees,S Kametani,I Ravinovich,W C Chang,A Taranenko,I Shein,G Bunce,D Kotchetkov,A Lebedev,H Masui,I D Ojha,A Denisov,T C Awes,P Chand,T J Uam,S Zhou,B D Fox,D M Lee,V L Rykov,S Sawada,A D Frawley,M Togawa,K Katou,S Batsouli,M L Brooks,R A Soltz,S Nagamiya,F Staley,W E Sondheim,M Gonin,L Aphecetche,Z Fraenkel,I V Sourikova,Y Akiba,J H Kang,S C Johnson,E M Takagui,S Bathe,P L Mcgaughey,Y Riabov,R P Pisani,I J Choi,V Cianciolo,L Sanfratello,M Konno,O Dietzsch,I Tserruya,A K Purwar,G Roche,Y Watanabe,N Kamihara,M Harvey,J P Sullivan,V Peresedov,K Kurita,V Papavassiliou,R Granier De Cassagnac,O Zaudtke,P Tarján,J G Boissevain,R Santo,B Bassalleck,R S Towell,N Grau,H Hiejima,T Matsumoto,V V Ikonnikov,V Dzhordzhadze,T Horaguchi,T L Thomas,D E Fields,S Leckey,J C Hill,X Camard,N N Ajitanand,J G Lajoie,J M Burward-Hoy,J L Nagle,F Matathias,M Muniruzzaman,O Drapier,V Babintsev,M P Comets,H W Vanhecke,K S Sim,M Velkovsky,K Hasuko,A Deshpande,D P Morrison,A Yanovich,M Rosati,C L Woody,J E Frantz,B Khachaturov,P J Kroon,Y Goto,F Kajihara,M Stepanov,E Vznuzdaev,R Kohara,T K Hemmick,G David,R Lacey,A Bazilevsky,S Esumi,G R Young,E J Desmond,N Willis,R Seto,S Afanasiev,Y Le Bornec,K Okada,M Heffner,J Newby,M Issah,V Baublis,J L Drachenberg,T Ichihara,C A Ogilvie,A Isupov,A Taketani,J Zimányi,G S Kyle,P W Stankus,M A L Leite,I Otterlund,S F Pate,T Hachiya,S P Stoll,M Grosse Perdekamp,Y Tsuchimoto,A Durum,D Isenhower,M C Mccain,B Sahlmueller,Y Cobigo,W Holzmann,W A Zajc,A Hoover,E P Hartouni,D Jouan,A Romana,K Das,I E Yushmanov,E Kistenev,A Kozlov,J S Haggerty,S H Aronson,M T Bjorndal,A Malakhov,M Germain,J Rak,V Kochetkov,G J Kunde,P D Barnes,J T Mitchell,K Homma,J Jia,E O’Brien,S Sakai,A Baldisseri,R Hobbs,J M Moss,D Pal,G B Kim ,S Kelly,K S Joo,С Беликов ,P Hidas,D J Kim,K Ozawa,P Constantin,T A Shibata ,Kazuhiro Tanaka ,X R Wang,M Inaba,H.-Å Gustafsson,A Glenn,J M Qualls,S White ,B Espagnon,T E Miller,H Lim,K Oyama,V Semenov,A Soldatov,T Chujo,A Öskarsson ,J Gösset ,S Gadrat,E Kinney,Y Kwon,R Averbeck,J Alexander,V Riabov,J Velkovska,M Csanád,X H Li,O Jinnouchi,V Pantuev,М А Volkov ,Xiaopeng Zong ,A Litvinenko,L Isenhower,H En’Yo,A Kiyomichi,J Tojo,A Khanzadeev,K Reygers,D D’Enterria,K F Read,H Okada,H Buesching,D Dutta,N Tyurin,B V Jacak,S S Ryu,G C Mishra,J P Cussonneau,E Kim,C Y ,H Borel,V Manko ,H Sato ,G Martı́nez ,M Kaneta,S Fokin ,A M Sickles ,J Nystrand,S Greene ,B Hong,H Ohnìshì ,L Zolin,J C Peng ,Susumu Sato ,J Park,M Ishihara,A P.t Palounek ,V Veszprémi,S Takagi,Y Miake,M Reuter,X He,F Fleuret,Kazuo Aoki ,H Tydesjö,C Zhang,A Al-Jamel,V Samsonov,M L Purschke,Y Schütz ,A G Hansen,R Hayano,C Maguire ,Jun Kikuchi ,B Cole ,M Shimomura,T Nakamura,C A Aidala ,W J Park,S Y Fung ,T Sugitate,S P Sørensen ,N Saito,F Bauer,P Rosnet,S S.e Rosendahl ,V N Tram ,C L Silva,H Torii,T Csörgõ ,H Hamagaki,Christian Klein-Boesing ,T Kawabata,Hisao Kobayashi ,R Arméndariz ,A Milov,V.n Penev ,M X Liu,Y V Efremenko,H J Kim,Á Kiss ,D Silvermyr,Y Mao,D S Brown,F Deák,A Nyanin ,А Виноградов ,A K Mohanty,H Pei,T Sakaguchi,C Finck,K Shigaki,W Xie

doi:10.1103/physrevlett.98.172302

Abstract

The dependence of transverse momentum spectra of neutral pions and eta mesons with p(T) < 16 GeV/c and p(T) < 12 GeV/c, respectively, on the centrality of the collision has been measured at midrapidity by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider (RHIC) in d + Au collisions at root s(NN) = 200 GeV. The measured yields are compared to those in p + p collisions at the same root s(NN) scaled by the number of underlying nucleon-nucleon collisions in d + Au. At all centralities, the yield ratios show no suppression, in contrast to the strong suppression seen for central An + Au collisions at RHIC. Only a weak p(T) and centrality dependence can be observed.

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