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J/$\psi$ Production and Nuclear Effects for $d+Au$ and $p+p$ Collisions at $\sqrt{s_NN}$ = 200 GeV

S.S. Adler S. Afanasiev C. Aidala N.N. Ajitanand Y. Akiba A. Al-Jamel J. Alexander K. Aoki Laurent Aphecetche 1 R. Armendariz S.H. Aronson R. Averbeck T.C. Awes V. Babintsev A. Baldisseri K.N. Barish P.D. Barnes B. Bassalleck S. Bathe S. Batsouli V. Baublis F. Bauer A. Bazilevsky S. Belikov M.T. Bjorndal J.G. Boissevain H. Borel M.L. Brooks D.S. Brown N. Bruner D. Bucher H. Buesching V. Bumazhnov G. Bunce J.M. Burward-Hoy S. Butsyk X. Camard 1 P. Chand W.C. Chang S. Chernichenko C.Y. Chi J. Chiba M. Chiu I.J. Choi R.K. Choudhury T. Chujo V. Cianciolo Y. Cobigo B.A. Cole M.P. Comets 2 P. Constantin M. Csanad T. Csorgo Jean-Pierre Cussonneau 1 D. d'Enterria K. Das G. David F. Deak H. Delagrange 1 A. Denisov A. Deshpande E.J. Desmond A. Devismes O. Dietzsch J.L. Drachenberg O. Drapier 3 A. Drees A. Durum D. Dutta V. Dzhordzhadze Y.V. Efremenko H. Enyo B. Espagnon 2 S. Esumi D.E. Fields C. Finck 1 F. Fleuret 3 S.L. Fokin B.D. Fox Z. Fraenkel J.E. Frantz A. Franz A.D. Frawley Y. Fukao S.-Y. Fung S. Gadrat 4 Marie Germain 1 A. Glenn M. Gonin 3 J. Gosset Y. Goto R. Granier de Cassagnac 3 N. Grau S.V. Greene M. Grosse Perdekamp H.-A. Gustafsson T. Hachiya J.S. Haggerty H. Hamagaki A.G. Hansen E.P. Hartouni M. Harvey K. Hasuko R. Hayano X. He M. Heffner T.K. Hemmick J.M. Heuser P. Hidas H. Hiejima J.C. Hill R. Hobbs W. Holzmann K. Homma B. Hong A. Hoover T. Horaguchi T. Ichihara V.V. Ikonnikov K. Imai M. Inaba M. Inuzuka D. Isenhower L. Isenhower M. Ishihara M. Issah A. Isupov B.V. Jacak J. Jia O. Jinnouchi B.M. Johnson S.C. Johnson K.S. Joo D. Jouan 2 F. Kajihara S. Kametani N. Kamihara M. Kaneta J.H. Kang K. Katou T. Kawabata A.V. Kazantsev Steven Kelly B. Khachaturov A. Khanzadeev J. Kikuchi D.J. Kim E. Kim G.-B. Kim 3 H.J. 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.J. Kroon C.H. Kuberg G.J. Kunde K. Kurita M.J. Kweon Y. Kwon G.S. Kyle R. Lacey J.G. Lajoie Y. Le Bornec 2 A. Lebedev S. Leckey D.M. Lee M.J. Leitch M.A.L. Leite X.H. Li H. Lim A. Litvinenko M.X. Liu C.F. Maguire Y.I. Makdisi A. Malakhov V.I. Manko Y. Mao Gines Martinez Garcia 1 H. Masui F. Matathias T. Matsumoto M.C. Mccain P.L. Mcgaughey Y. Miake T.E. Miller A. Milov S. Mioduszewski G.C. Mishra J.T. Mitchell A.K. Mohanty D.P. Morrison J.M. Moss D. Mukhopadhyay M. Muniruzzaman S. Nagamiya J.L. Nagle T. Nakamura J. Newby A.S. Nyanin J. Nystrand E. O'Brien C.A. Ogilvie H. Ohnishi I.D. Ojha H. Okada K. Okada A. Oskarsson I. Otterlund K. Oyama K. Ozawa D. Pal A.P.T. Palounek V. Pantuev V. Papavassiliou J. Park W.J. Park S.F. Pate H. Pei V. Penev J.-C. Peng H. Pereira V. Peresedov A. Pierson C. Pinkenburg R.P. Pisani M.L. Purschke A.K. Purwar J.M. Qualls J. Rak I. Ravinovich K.F. Read M. Reuter K. Reygers V. Riabov Y. Riabov G. Roche 4 A. Romana 3 M. Rosati S.S.E. Rosendahl P. Rosnet 4 V.L. Rykov S.S. Ryu N. Saito T. Sakaguchi S. Sakai V. Samsonov L. Sanfratello R. Santo H.D. Sato S. Sato S. Sawada Y. Schutz 1 V. Semenov R. Seto T.K. Shea I. Shein T.-A. Shibata K. Shigaki M. Shimomura A. Sickles C.L. Silva D. Silvermyr K.S. Sim A. Soldatov R.A. Soltz W.E. Sondheim S.P. Sorensen I.V. Sourikova F. Staley P.W. Stankus E. Stenlund M. Stepanov A. Ster S.P. Stoll T. Sugitate J.P. Sullivan S. Takagi E.M. Takagui A. Taketani K.H. Tanaka Y. Tanaka K. Tanida M.J. Tannenbaum A. Taranenko P. Tarjan T.L. Thomas M. Togawa J. Tojo H. Torii R.S. Towell V.-N. Tram 3 I. Tserruya Y. Tsuchimoto E. Tujuba 3 H. Tydesjo N. Tyurin T.J. Uam J. Velkovska M. Velkovsky V. Veszpremi A.A. Vinogradov M.A. Volkov E. Vznuzdaev X.R. Wang Y. Watanabe S.N. White N. Willis 2 F.K. Wohn C.L. Woody W. Xie A. Yanovich S. Yokkaichi G.R. Young I.E. Yushmanov W.A. Zajc C. Zhang S. Zhou J. Zimanyi L. Zolin X. Zong H.W. van Hecke
Abstract : J/psi production in d+Au and p+p collisions at sqrt(s_NN) = 200 GeV has been measured by the PHENIX experiment at rapidities -2.2 < y < +2.4. The cross sections and nuclear dependence of J/\psi production versus rapidity, transverse momentum, and centrality are obtained and compared to lower energy p+A results and to theoretical models. The observed nuclear dependence in d+Au collisions is found to be modest, suggesting that the absorption in the final state is weak and the shadowing of the gluon distributions is small and consistent with DGLAP-based parameterizations that fit deep-inelastic scattering and Drell-Yan data at lower energies.
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Submitted on : Wednesday, August 24, 2005 - 4:44:56 PM
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S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, et al.. J/$\psi$ Production and Nuclear Effects for $d+Au$ and $p+p$ Collisions at $\sqrt{s_NN}$ = 200 GeV. Physical Review Letters, American Physical Society, 2006, 96, pp.012304. ⟨10.1103/PhysRevLett.96.012304⟩. ⟨in2p3-00024495⟩

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