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Centrality dependence of charged hadron production in deuteron+gold and nucleon+gold 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. En'Yo 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. Tarj'An T.L. Thomas M. Togawa J. Tojo H. Torii R.S. Towell V.-N. Tram 3 I. Tserruya Y. Tsuchimoto 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 : We present transverse momentum (p_T) spectra of charged hadrons measured in deuteron-gold and nucleon-gold collisions at \sqrts = 200 GeV for four centrality classes. Nucleon-gold collisions were selected by tagging events in which a spectator nucleon was observed in one of two forward rapidity detectors. The spectra and yields were investigated as a function of the number of binary nucleon-nucleon collisions, \nu, suffered by deuteron nucleons. A comparison of charged particle yields to those in p+p collisions show that the yield per nucleon-nucleon collision saturates with \nu for high momentum particles. We also present the charged hadron to neutral pion ratios as a function of p_T.
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Submitted on : Wednesday, October 31, 2007 - 3:07:25 PM
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S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, et al.. Centrality dependence of charged hadron production in deuteron+gold and nucleon+gold collisions at $\sqrt{s_{NN}}$=200 GeV. Physical Review C, American Physical Society, 2007, 77, pp.014905. ⟨10.1103/PhysRevC.77.014905⟩. ⟨in2p3-00184627⟩

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