Transverse momentum dependence of η meson suppression in Au+Au collisions at sqrt[s_{NN}]=200 GeV

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

PHYSICAL REVIEW C（2010）

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摘要

New measurements by the PHENIX experiment at the Relativistic Heavy Ion Collider for. production at midrapidity as a function of transverse momentum ((PT)) and collision centrality in root s(NN) = 200 GeV Au + Au and p + p collisions are presented. They indicate nuclear modification factors (R-AA) which are similar in both magnitude and trend to those found in earlier pi(0) measurements. Linear fits to R-AA as a function of (PT) in 5-20 GeV/c show that the slope is consistent with zero within two standard deviations at all centralities, although a slow rise cannot be excluded. Having different statistical and systematic uncertainties, the pi(0) and eta measurements are complementary at high (PT); thus, along with the extended (PT) range of these data they can provide additional constraints for theoretical modeling and the extraction of transport properties.

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