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Centrality dependence of the high pT charged hadron suppression in Au + Au collisions at √sNN = 130 GeV

  • K. Adcox
  • , S. S. Adler
  • , N. N. Ajitanand
  • , Y. Akiba
  • , J. Alexander
  • , L. Aphecetche
  • , Y. Arai
  • , S. H. Aronson
  • , R. Averbeck
  • , T. C. Awes
  • , K. N. Barish
  • , P. D. Barnes
  • , J. Barrette
  • , B. Bassalleck
  • , S. Bathe
  • , V. Baublis
  • , A. Bazilevsky
  • , S. Belikov
  • , F. G. Bellaiche
  • , S. T. Belyaev
  • M. J. Bennett, Y. Berdnikov, S. Botelho, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. Burward-Hoy, S. Butsyk, T. A. Carey, P. Chand, J. Chang, W. C. Chang, L. L. Chavez, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, R. K. Choudhury, T. Christ, T. Chujo, M. S. Chung, P. Chung, V. Cianciolo, B. A. Cole, D. G. D'Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, B. V. Dinesh, A. Drees, A. Durum, D. Dutta, K. Ebisu, Y. V. Efremenko, K. El Chenawi, H. En'yo, S. Esumi, L. Ewell, T. Ferdousi, D. E. Fields, S. L. Fokin, Z. Fraenkel, A. Franz, A. D. Frawley, S. Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, A. L. Godoi, Y. Goto, S. V. Greene, M. Grosse Perdekamp, S. K. Gupta, W. Guryn, H. A. Gustafsson, J. S. Haggerty, H. Hamagaki, A. G. Hansen, H. Kara, E. P. Hartouni, R. Hayano, N. Hayashi, X. He, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, D. S. Ho, K. Homma, B. Hong, A. Hoover, T. Ichihara, K. Imai, M. S. Ippolitov, M. Ishihara, B. V. Jacak, W. Y. Jang, J. Jia, B. M. Johnson, S. C. Johnson, K. S. Joo, S. Kametani, J. H. Kang, M. Kann, S. S. Kapoor, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. J. Kim, H. J. Kim, S. Y. Kim, Y. G. Kim, W. W. Kinnison, E. Kistenev, A. Kiyomichi, C. Klein-Boesing, S. Klinksiek, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, D. Kotchetkov, A. Kozlov, P. J. Kroon, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, J. G. Lajoie, J. Lauret, A. Lebedev, D. M. Lee, M. J. Leitch, X. H. Li, Z. Li, D. J. Lim, M. X. Liu, X. Liu, Z. Liu, C. F. Maguire, J. Mahon, Y. I. Makdisi, V. I. Manko, Y. Mao, S. K. Mark, S. Markacs, G. Martinez, M. D. Marx, A. Masaike, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, M. Merschmeyer, F. Messer, M. Messer, Y. Miake, 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, M. Muniruzzaman, J. Murata, S. Nagamiya, Y. Nagasaka, J. L. Nagle, Y. Nakada, B. K. Nandi, J. Newby, L. Nikkinen, P. Nilsson, S. Nishimura, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, M. Ono, V. Onuchin, A. Oskarsson, L. Österman, I. Otterlund, K. Oyama, L. Paffrath, A. P.T. Palounek, V. S. Pantuev, V. Papavassiliou, S. F. Pate, T. Peitzmann, A. N. Petridis, C. Pinkenburg, R. P. Pisani, P. Pitukhin, F. Plasil, M. Pollack, K. Pope, M. L. Purschke, I. Ravinovich, K. F. Read, K. Reygers, V. Riabov, Y. Riabov, M. Rosati, A. A. Rose, S. S. Ryu, N. Saito, A. Sakaguchi, T. Sakaguchi, H. Sako, T. Sakuma, V. Samsonov, T. C. Sangster, R. Santo, H. D. Sato, S. Sato, S. Sawada, B. R. Schlei, Y. Schutz, V. Semenov, R. Seto, T. K. Shea, I. Shein, T. A. Shibata, K. Shigaki, T. Shiina, Y. H. Shin, I. G. Sibiriak, D. Silvermyr, K. S. Sim, J. Simon-Gillo, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, S. Sorensen, P. W. Stankus, N. Starinsky, P. Steinberg, E. Stenlund, A. Ster, S. P. Stoll, M. Sugioka, T. Sugitate, J. P. Sullivan, Y. Sumi, Z. Sun, M. Suzuki, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, E. Taniguchi, M. J. Tannenbaum, J. Thomas, J. H. Thomas, T. L. Thomas, W. Tian, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, A. A. Tsvetkov, S. K. Tuli, H. Tydesjö, N. Tyurin, T. Ushiroda, H. W. van Hecke, C. Velissaris, J. Velkovska, M. Velkovsky, A. A. Vinogradov, A. M. Volkov, A. Vorobyov, E. Vznuzdaev, H. Wang, Y. Watanabe, S. N. White, C. Witzig, F. K. Wohn, C. L. Woody, W. Xie, K. Yagi, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, Z. Zhang, S. Zhou
  • Vanderbilt University
  • Brookhaven National Laboratory
  • Stony Brook University
  • High Energy Accelerator Research Organization, Tsukuba
  • Nantes Université
  • Oak Ridge National Laboratory
  • University of California at Riverside
  • Los Alamos National Laboratory
  • McGill University
  • University of New Mexico
  • University of Münster
  • Petersburg Nuclear Physics InstituteGatchina
  • Institute for High Energy Physics
  • Iowa State University
  • Russian Research Centre Kurchatov Institute
  • Peter the Great St. Petersburg Polytechnic University
  • Universidade de São Paulo
  • New Mexico State University
  • Homi Bhabha National Institute
  • Academia Sinica - Institute of Physics
  • Columbia University
  • University of Tsukuba
  • Korea University
  • Nagasaki Institute of Applied Science
  • Kyoto University
  • RIKEN
  • Weizmann Institute of Science
  • Florida State University
  • Lund University
  • University of Tennessee
  • The University of Tokyo
  • Lawrence Livermore National Laboratory
  • Georgia State University
  • Waseda University
  • Yonsei University
  • Hiroshima University
  • Myongji University
  • China National Nuclear Corporation
  • Banaras Hindu University
  • Institute of Science Tokyo
  • Wigner Research Centre for Physics

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

PHENIX has measured the centrality dependence of charged hadron pT spectra from Au + Au collisions at sNN√ = 130 GeV. The truncated mean pT decreases with centrality for pT > 2 GeV/c, indicating an apparent reduction of the contribution from hard scattering to high pT hadron production. For central collisions the yield at high pT is shown to be suppressed compared to binary nucleon-nucleon collision scaling of p + p data. This suppression is monotonically increasing with centrality, but most of the change occurs below 30% centrality, i.e., for collisions with less than ∼ 140 participating nucleons. The observed pT and centrality dependence is consistent with the particle production predicted by models including hard scattering and subsequent energy loss of the scattered partons in the dense matter created in the collisions.

Original languageEnglish
Pages (from-to)82-92
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume561
Issue number1-2
DOIs
StatePublished - May 22 2003

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