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Midrapidity Neutral-Pion Production in Proton-Proton Collisions at $\sqrt{s}$ = 200 GeV

S.S. Adler S. Afanasiev C. Aidala N.N. Ajitanand Y. Akiba J. Alexander R. Amirikas Laurent Aphecetche 1 S.H. Aronson R. Averbeck T.C. Awes R. Azmoun V. Babintsev A. Baldisseri K.N. Barish P.D. Barnes B. Bassalleck S. Bathe S. Batsouli V. Baublis A. Bazilevsky S. Belikov Y. Berdnikov S. Bhagavatula J.G. Boissevain H. Borel S. Borenstein 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 J.S. Chai P. Chand W.C. Chang S. Chernichenko C.Y. Chi J. Chiba M. Chiu I.J. Choi J. Choi R.K. Choudhury T. Chujo V. Cianciolo Y. Cobigo B.A. Cole P. Constantin D.G. d'Enterria G. David H. Delagrange 1 A. Denisov A. Deshpande E.J. Desmond O. Dietzsch O. Drapier 2 A. Drees K.A. Drees R. Du Rietz A. Durum D. Dutta Y.V. Efremenko K. El Chenawi A. Enokizono H. En'Yo S. Esumi L. Ewell D.E. Fields F. Fleuret 2 S.L. Fokin B.D. Fox Z. Fraenkel J.E. Frantz A. Franz A.D. Frawley S.Y. Fung S. Garpman T.K. Ghosh A. Glenn G. Gogiberidze M. Gonin 2 J. Gosset Y. Goto R. Granier de Cassagnac 2 N. Grau S.V. Greene M. Grosse Perdekamp W. Guryn H.A. Gustafsson T. Hachiya J.S. Haggerty H. Hamagaki A.G. Hansen E.P. Hartouni M. Harvey R. Hayano X. He M. Heffner T.K. Hemmick J.M. Heuser M. Hibino J.C. Hill W. Holzmann K. Homma B. Hong A. Hoover T. Ichihara V.V. Ikonnikov K. Imai L.D. Isenhower M. Ishihara M. Issah A. Isupov B.V. Jacak W.Y. Jang Y. Jeong J. Jia O. Jinnouchi B.M. Johnson S.C. Johnson K.S. Joo D. Jouan 3 S. Kametani N. Kamihara J.H. Kang S.S. Kapoor K. Katou Steven Kelly B. Khachaturov A. Khanzadeev J. Kikuchi D.H. Kim D.J. Kim D.W. Kim E. Kim G.-B. Kim 2 H.J. Kim E. Kistenev A. Kiyomichi K. Kiyoyama C. Klein-Boesing H. Kobayashi L. Kochenda V. Kochetkov D. Koehler T. Kohama M. Kopytine D. Kotchetkov A. Kozlov P.J. Kroon C.H. Kuberg K. Kurita Y. Kuroki M.J. Kweon Y. Kwon G.S. Kyle R. Lacey V. Ladygin J.G. Lajoie A. Lebedev S. Leckey D.M. Lee S. Lee M.J. Leitch X.H. Li H. Lim A. Litvinenko M.X. Liu Yehan Liu C.F. Maguire Y.I. Makdisi A. Malakhov V.I. Manko Y. Mao Gines Martinez Garcia 1 M.D. Marx H. Masui F. Matathias T. Matsumoto P.L. Mcgaughey E. Melnikov F. Messer Y. Miake J. Milan T.E. Miller A. Milov S. Mioduszewski R.E. Mischke G.C. Mishra J.T. Mitchell A.K. Mohanty D.P. Morrison J.M. Moss F. Muhlbacher D. Mukhopadhyay M. Muniruzzaman J. Murata S. Nagamiya J.L. Nagle T. Nakamura B.K. Nandi M. Nara J. Newby P. Nilsson A.S. Nyanin J. Nystrand E. O'Brien C.A. Ogilvie H. Ohnishi I.D. Ojha K. Okada M. Ono V. Onuchin A. Oskarsson I. Otterlund K. Oyama K. Ozawa D. Pal A.P.T. Palounek V.S. Pantuev V. Papavassiliou J. Park A. Parmar S.F. Pate T. Peitzmann J.C. Peng V. Peresedov C. Pinkenburg R.P. Pisani F. Plasil M.L. Purschke A. Purwar J. Rak I. Ravinovich K.F. Read M. Reuter K. Reygers V. Riabov Y. Riabov G. Roche 4 A. Romana 2 M. Rosati P. Rosnet 4 S.S. Ryu M.E. Sadler N. Saito T. Sakaguchi M. Sakai S. Sakai V. Samsonov L. Sanfratello R. Santo H.D. Sato S. Sato S. Sawada Y. Schutz V. Semenov R. Seto M.R. Shaw T.K. Shea T.A. Shibata K. Shigaki T. Shiina C.L. Silva D. Silvermyr K.S. Sim C.P. Singh V. Singh M. Sivertz 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 E.M. Takagui A. Taketani M. Tamai K.H. Tanaka Y. Tanaka K. Tanida M.J. Tannenbaum P. Tarjan J.D. Tepe T.L. Thomas J. Tojo H. Torii R.S. Towell I. Tserruya H. Tsuruoka S.K. Tuli H. Tydesjo N. Tyurin H.W. van Hecke J. Velkovska M. Velkovsky L. Villatte A.A. Vinogradov M.A. Volkov E. Vznuzdaev X.R. Wang Y. Watanabe S.N. White F.K. Wohn C.L. Woody W. Xie Y. Yang A. Yanovich S. Yokkaichi G.R. Young I.E. Yushmanov W.A. Zajc C. Zhang S. Zhou L. Zolin
1 SUBATECH - Laboratoire SUBATECH Nantes
2 LLR - Laboratoire Leprince-Ringuet
3 IPNO - Institut de Physique Nucléaire d'Orsay
4 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
Abstract : The invariant differential cross section for inclusive neutral pion production in p+p collisions at sqrt(s_NN) = 200 GeV has been measured at mid-rapidity |eta| < 0.35 over the range 1 < p_T <~ 14 GeV/c by the PHENIX experiment at RHIC. Predictions of next-to-leading order perturbative QCD calculations are consistent with these measurements. The precision of our result is sufficient to differentiate between prevailing gluon-to-pion fragmentation functions.
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Submitted on : Wednesday, March 31, 2004 - 12:52:14 PM
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S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, et al.. Midrapidity Neutral-Pion Production in Proton-Proton Collisions at $\sqrt{s}$ = 200 GeV. Physical Review Letters, American Physical Society, 2003, 91, pp.241803-1-241803-6. ⟨in2p3-00022315⟩

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