High-pT charged hadron suppression in Au+Au collisions at √SNN=200 GeV

S. S. Adler, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, 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. BaublisA. 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, 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, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, O. Drapier, 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, 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, J. Gosset, Y. Goto, R. Granier de Cassagnac, 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, 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, S. Kametani, N. Kamihara, J. H. Kang, S. S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim, E. Kim, G. B. Kim, 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, Y. Liu, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, 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. Mühlbacher, 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. K. Purwar, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, 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. Tarján, J. D. Tepe, T. L. Thomas, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, S. K. Tuli, H. Tydesjö, 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

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    Abstract

    The PHENIX experiment at the Relativistic Heavy Ion Collider has measured charged hadron yields at midrapidity over a wide range of transverse momenta (0.5<pT<10 GeV/c) in Au + Au collisions at √s NN =200 GeV. The data are compared to π0 measurements from the same experiment. For both charged hadrons and neutral pions, the yields per nucleon-nucleon collision are significantly suppressed in central compared to peripheral and nucleon-nucleon collisions. The suppression sets in gradually and increases with increasing centrality of the collisions. Above 4-5 GeV/c in pT, a constant and almost identical suppression of charged hadrons and π0's is observed. The pT spectra are compared to published spectra from Au+Au at √sNN=130 in terms of x T scaling. Central and peripheral π0 as well as peripheral charged spectra exhibit the same xT scaling as observed in p+p data.

    Original languageEnglish
    Article number034910
    Pages (from-to)034910-1-034910-20
    JournalPhysical Review C - Nuclear Physics
    Volume69
    Issue number3
    DOIs
    StatePublished - Mar 2004

    Funding

    We thank the staff of the Collider-Accelerator and Physics Departments at Brookhaven National Laboratory and the staff of the other PHENIX participating institutions for their vital contributions. We acknowledge support from the Department of Energy, Office of Science, Nuclear Physics Division, the National Science Foundation, Abilene Christian University Research Council, Research Foundation of SUNY, and Dean of the College of Arts and Sciences, Vanderbilt University (USA), Ministry of Education, Culture, Sports, Science, and Technology and the Japan Society for the Promotion of Science (Japan), Conselho Nacional de Desenvolvimento Científico e Tecnológico and Fundação de Amparo à Pesquisa do Estado de São Paulo (Brazil), Natural Science Foundation of China (People’s Republic of China), Centre National de la Recherche Scientifique, Commissariat à l’Énergie Atomique, Institut National de Physique Nucléaire et de Physique des Particules and Institut National de Physique Nucléaire et de Physique des Particules, (France), Bundesministerium fuer Bildung und Forschung, Deutscher Akademischer Austausch Dienst, and Alexander von Humboldt Stiftung (Germany), Hungarian National Science Fund, OTKA (Hungary), Department of Atomic Energy and Department of Science and Technology (India), Israel Science Foundation (Israel), Korea Research Foundation and Center for High Energy Physics (Korea), Russian Ministry of Industry, Science and Tekhnologies, Russian Academy of Science, Russian Ministry of Atomic Energy (Russia), VR and the Wallenberg Foundation (Sweden), the U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union, the US-Hungarian NSF-OTKA-MTA, the US-Israel Binational Science Foundation, and the 5th European Union TMR Marie-Curie Programme.

    FundersFunder number
    Abilene Christian University Research Council
    Center for High Energy Physics
    Centre National de la Recherche Scientifique, Commissariat à l’Énergie Atomique
    Department of Atomic Energy and Department of Science and Technology (India), Israel Science Foundation (Israel), Korea Research Foundation
    Nuclear Physics Division
    Research Foundation of SUNY
    Russian Ministry of Industry, Science and Tekhnologies
    US-Hungarian NSF-OTKA-MTA
    Wallenberg Foundation (Sweden)
    National Science Foundation
    U.S. Department of Energy
    CRDF Global
    Alexander von Humboldt-Stiftung
    Office of Science
    Vanderbilt University
    College of Arts and Sciences, Boston University
    Deutscher Akademischer Austauschdienst
    Japan Society for the Promotion of Science
    Ministry of Education, Culture, Sports, Science and Technology
    United States-Israel Binational Science Foundation
    Fundação de Amparo à Pesquisa do Estado de São Paulo
    National Natural Science Foundation of China
    Bundesministerium für Bildung und Forschung
    Russian Academy of Sciences
    Hungarian Scientific Research Fund
    Conselho Nacional de Desenvolvimento Científico e Tecnológico
    Institut National de Physique Nucléaire et de Physique des Particules
    Federal Agency of Atomic Energy of the Russian Federation

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