Nuclear effects on hadron production in d plus Au collisions at root SNN = 200 GeV revealed by comparison with p plus p data

PHENIX has measured the centrality dependence of midrapidity pion, kaon, and proton transverse momentum distributions in d+Au and p+p collisions at root s(NN) = 200 GeV. The p+p data provide a reference for nuclear effects in d+Au and previously measured Au+Au collisions. Hadron production is enhanced in d+Au, relative to independent nucleon-nucleon scattering, as was observed in lower energy collisions. The nuclear modification factor for (anti)protons is larger than that for pions. The difference increases with centrality but is not sufficient to account for the abundance of baryon production observed in central Au+Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC). The centrality dependence in d+Au shows that the nuclear modification factor increases gradually with the number of collisions encountered by each participant nucleon. We also present comparisons with lower energy data as well as with parton recombination and other theoretical models of nuclear effects on particle production. Disciplines Nuclear | Physics Comments This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, A. Al-Jamel, J. Alexander et al. "Nuclear effects on hadron production in d+ Au collisions at s NN= 200 GeV revealed by comparison with p+ p data." Physical Review C 74, no. 2 (2006): 024904. DOI: 10.1103/ PhysRevC.74.024904. Posted with permission. Authors S. S. Adler, Sergey Belikov, Paul Constantin, Nathan C. Grau, John C. Hill, John G. Lajoie, Alexandre Lebedev, Craig Ogilvie, H. Pei, Jan Rak, Marzia Rosati, F. K. Wohn, X. Zong, et al., and PHENIX Collaboration This article is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/physastro_pubs/348 PHYSICAL REVIEW C 74, 024904 (2006) Nuclear effects on hadron production in d + Au collisions at √sN N = 200 GeV revealed by comparison with p + p data S. S. Adler,5 S. Afanasiev,20 C. Aidala,10 N. N. Ajitanand,44 Y. Akiba,21,40 A. Al-Jamel,35 J. Alexander,44 K. Aoki,25 L. Aphecetche,46 R. Armendariz,35 S. H. Aronson,5 R. Averbeck,45 T. C. Awes,36 V. Babintsev,17 A. Baldisseri,11 K. N. Barish,6 P. D. Barnes,28 B. Bassalleck,34 S. Bathe,6,31 S. Batsouli,10 V. Baublis,39 F. Bauer,6 A. Bazilevsky,5,41 S. Belikov,17,19 M. T. Bjorndal,10 J. G. Boissevain,28 H. Borel,11 M. L. Brooks,28 D. S. Brown,35 N. Bruner,34 D. Bucher,31 H. Buesching,5,31 V. Bumazhnov,17 G. Bunce,5,41 J. M. Burward-Hoy,27,28 S. Butsyk,45 X. Camard,46 P. Chand,4 W. C. Chang,2 S. Chernichenko,17 C. Y. Chi,10 J. Chiba,21 M. Chiu,10 I. J. Choi,53 R. K. Choudhury,4 T. Chujo,5 V. Cianciolo,36 Y. Cobigo,11 B. A. Cole,10 M. P. Comets,37 P. Constantin,19 M. Csanád,13 T. Csörgö,22 J. P. Cussonneau,46 D. d’Enterria,10 K. Das,14 G. David,5 F. Deák,13 H. Delagrange,46 A. Denisov,17 A. Deshpande,41 E. J. Desmond,5 A. Devismes,45 O. Dietzsch,42 J. L. Drachenberg,1 O. Drapier,26 A. Drees,45 A. Durum,17 D. Dutta,4 V. Dzhordzhadze,47 Y. V. Efremenko,36 H. En’yo,40,41 B. Espagnon,37 S. Esumi,49 D. E. Fields,34,41 C. Finck,46 F. Fleuret,26 S. L. Fokin,24 B. D. Fox,41 Z. Fraenkel,52 J. E. Frantz,10 A. Franz,5 A. D. Frawley,14 Y. Fukao,25,40,41 S.-Y. Fung,6 S. Gadrat,29 M. Germain,46 A. Glenn,47 M. Gonin,26 J. Gosset,11 Y. Goto,40,41 R. Granier de Cassagnac,26 N. Grau,19 S. V. Greene,50 M. Grosse Perdekamp,18,41 H.-Å. Gustafsson,30 T. Hachiya,16 J. S. Haggerty,5 H. Hamagaki,8 A. G. Hansen,28 E. P. Hartouni,27 M. Harvey,5 K. Hasuko,40 R. Hayano,8 X. He,15 M. Heffner,27 T. K. Hemmick,45 J. M. Heuser,40 P. Hidas,22 H. Hiejima,18 J. C. Hill,19 R. Hobbs,34 W. Holzmann,44 K. Homma,16 B. Hong,23 A. Hoover,35 T. Horaguchi,40,41,48 T. Ichihara,40,41 V. V. Ikonnikov,24 K. Imai,25,40 M. Inaba,49 M. Inuzuka,8 D. Isenhower,1 L. Isenhower,1 M. Ishihara,40 M. Issah,44 A. Isupov,20 B. V. Jacak,45 J. Jia,45 O. Jinnouchi,40,41 B. M. Johnson,5 S. C. Johnson,27 K. S. Joo,32 D. Jouan,37 F. Kajihara,8 S. Kametani,8,51 N. Kamihara,40,48 M. Kaneta,41 J. H. Kang,53 K. Katou,51 T. Kawabata,8 A. V. Kazantsev,24 S. Kelly,9,10 B. Khachaturov,52 A. Khanzadeev,39 J. Kikuchi,51 D. J. Kim,53 E. Kim,43 G.-B. Kim,26 H. J. Kim,53 E. Kinney,9 A. Kiss,13 E. Kistenev,5 A. Kiyomichi,40 C. Klein-Boesing,31 H. Kobayashi,41 L. Kochenda,39 V. Kochetkov,17 R. Kohara,16 B. Komkov,39 M. Konno,49 D. Kotchetkov,6 A. Kozlov,52 P. J. Kroon,5 C. H. Kuberg,1,∗ G. J. Kunde,28 K. Kurita,40 M. J. Kweon,23 Y. Kwon,53 G. S. Kyle,35 R. Lacey,44 J. G. Lajoie,19 Y. Le Bornec,37 A. Lebedev,19,24 S. Leckey,45 D. M. Lee,28 M. J. Leitch,28 M. A. L. Leite,42 X. H. Li,6 H. Lim,43 A. Litvinenko,20 M. X. Liu,28 C. F. Maguire,50 Y. I. Makdisi,5 A. Malakhov,20 V. I. Manko,24 Y. Mao,38,40 G. Martinez,46 H. Masui,49 F. Matathias,45 T. Matsumoto,8,51 M. C. McCain,1 P. L. McGaughey,28 Y. Miake,49 T. E. Miller,50 A. Milov,45 S. Mioduszewski,5 G. C. Mishra,15 J. T. Mitchell,5 A. K. Mohanty,4 D. P. Morrison,5 J. M. Moss,28 D. Mukhopadhyay,52 M. Muniruzzaman,6 S. Nagamiya,21 J. L. Nagle,9,10 T. Nakamura,16 J. Newby,47 A. S. Nyanin,24 J. Nystrand,30 E. O’Brien,5 C. A. Ogilvie,19 H. Ohnishi,40 I. D. Ojha,3,50 H. Okada,25,40 K. Okada,40,41 A. Oskarsson,30 I. Otterlund,30 K. Oyama,8 K. Ozawa,8 D. Pal,52 A. P. T. Palounek,28 V. Pantuev,45 V. Papavassiliou,35 J. Park,43 W. J. Park,23 S. F. Pate,35 H. Pei,19 V. Penev,20 J.-C. Peng,18 H. Pereira,11 V. Peresedov,20 A. Pierson,34 C. Pinkenburg,5 R. P. Pisani,5 M. L. Purschke,5 A. K. Purwar,45 J. M. Qualls,1 J. Rak,19 I. Ravinovich,52 K. F. Read,36,47 M. Reuter,45 K. Reygers,31 V. Riabov,39 Y. Riabov,39 G. Roche,29 A. Romana,26 M. Rosati,19 S. S. E. Rosendahl,30 P. Rosnet,29 V. L. Rykov,40 S. S. Ryu,53 N. Saito,25,40,41 T. Sakaguchi,8,51 S. Sakai,49 V. Samsonov,39 L. Sanfratello,34 R. Santo,31 H. D. Sato,25,40 S. Sato,5,49 S. Sawada,21 Y. Schutz,46 V. Semenov,17 R. Seto,6 T. K. Shea,5 I. Shein,17 T.-A. Shibata,40,48 K. Shigaki,16 M. Shimomura,49 A. Sickles,45 C. L. Silva,42 D. Silvermyr,28 K. S. Sim,23 A. Soldatov,17 R. A. Soltz,27 W. E. Sondheim,28 S. P. Sorensen,47 I. V. Sourikova,5 F. Staley,11 P. W. Stankus,36 E. Stenlund,30 M. Stepanov,35 A. Ster,22 S. P. Stoll,5 T. Sugitate,16 J. P. Sullivan,28 S. Takagi,49 E. M. Takagui,42 A. Taketani,40,41 K. H. Tanaka,21 Y. Tanaka,33 K. Tanida,40 M. J. Tannenbaum,5 A. Taranenko,44 P. Tarján,12 T. L. Thomas,34 M. Togawa,25,40 J. Tojo,40 H. Torii,25,41 R. S. Towell,1 V-N. Tram,26 I. Tserruya,52 Y. Tsuchimoto,16 H. Tydesjö,30 N. Tyurin,17 T. J. Uam,32 H. W. van Hecke,28 J. Velkovska,5 M. Velkovsky,45 V. Veszprémi,12 A. A. Vinogradov,24 M. A. Volkov,24 E. Vznuzdaev,39 X. R. Wang,15 Y. Watanabe,40,41 S. N. White,5 N. Willis,37 F. K. Wohn,19 C. L. Woody,5 W. Xie,6 A. Yanovich,17 S. Yokkaichi,40,41 G. R. Young,36 I. E. Yushmanov,24 W. A. Zajc,10,† C. Zhang,10 S. Zhou,7 J. Zimányi,22 L. Zolin,20 and X. Zong19 (PHENIX Collaboration) 1Abilene Christian University, Abilene, Texas 79699, USA 2Institute of Physics, Academia Sinica, Taipei 11529, Taiwan 3Department of Physics, Banaras Hindu University, Varanasi 221005, India 4Bhabha Atomic Research Centre, Bombay 400 085, India 5Brookhaven National Laboratory, Upton, New York 11973-5000, USA 6University of California-Riverside, Riverside, California 92521, USA 7China Institute of Atomic Energy (CIAE), Beijing, People’s Republic of China 8Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan 9University of Colorado, Boulder, Colorado 80309, USA 10Columbia University, New York, New York 10027, and Nevis Laboratories, Irvington, New York 10533, USA 11Dapnia, CEA Saclay, F-91191, Gif-sur-Yvette, France 12Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary 13ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary 0556-2813/2006/74(2)/024904(13) 024904-1 ©2006 The American Physical Society S. S. ADLER et al. PHYSICAL REVIEW C 74, 024904 (2006) 14Florida State University, Tallahassee, Florida 32306, USA 15Georgia State University, Atlanta, Georgia 30303, USA 16Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan 17IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, RU-142281, Russia 18University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA 19Iowa State University, Ames, Iowa 50011, USA 20Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow Region, Russia 21KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan 22KFKI Research Institute for Particle and Nuclear Physics of the Hungarian Academy of Sciences (MTA KFKI RMKI), H-1525 Budapest 114, P.O. Box 49, Budapest, Hungary 23Korea University, Seoul, 136-701, Korea 24Russian Research Center “Kurchatov Institute,” Moscow, Russia 25Kyoto University, Kyoto 606-8502, Japan 26Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128, Palaiseau, France 27Lawrence Livermore National Laboratory, Livermore, California 94550, USA 28Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA 29LPC, Université Blaise Pascal, CNRS-IN2P3, Clermont-Fd, F-63177 Aubiere Cedex, France 30Department of Physics, Lund University, Box 118, SE-22100 Lund, Sweden 31Institut für Kernphysik, University of Muenster, D-48149 Muenster, Germany 32Myongji University, Yongin, Kyonggido 449-728, Korea 33Nagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki 851-0193, Japan 34University of New Mexico, Albuquerque, New Mexico 87131, USA 35New Mexico State University, Las Cruces, New Mexico 88003, USA 36Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 37IPN-Orsay, Université Paris Sud, CNRS-IN2P3, BP1, F-91406, Orsay, France 38Peking University, Beijing, People’s Republic of China 39PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region, RU-188300, Russia 40RIKEN (Institute of Physical and Chemical Research), Wako, Saitama 351-0198, JAPAN 41RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000