Centrality Dependence Of Pi(0) And Eta Production At Large Transverse Momentum In Root S(Nn) = 200 Gev D+Au Collisions

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

PHYSICAL REVIEW LETTERS（2007）

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摘要

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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