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High-pT π0 production with respect to the reaction plane in Au+Au collisions at sNN=200 GeV

  • S. Afanasiev
  • , C. Aidala
  • , N. N. Ajitanand
  • , Y. Akiba
  • , J. Alexander
  • , A. Al-Jamel
  • , K. Aoki
  • , L. Aphecetche
  • , R. Armendariz
  • , S. H. Aronson
  • , R. Averbeck
  • , T. C. Awes
  • , B. Azmoun
  • , V. Babintsev
  • , A. Baldisseri
  • , K. N. Barish
  • , P. D. Barnes
  • , B. Bassalleck
  • , S. Bathe
  • , S. Batsouli
  • V. Baublis, F. Bauer, A. Bazilevsky, S. Belikov, R. Bennett, Y. Berdnikov, M. T. Bjorndal, J. G. Boissevain, H. Borel, K. Boyle, M. L. Brooks, D. S. Brown, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, S. Campbell, J. S. Chai, S. Chernichenko, J. Chiba, C. Y. Chi, M. Chiu, I. J. Choi, T. Chujo, V. Cianciolo, C. R. Cleven, Y. Cobigo, B. A. Cole, M. P. Comets, P. Constantin, M. Csanád, T. Csörgo, T. Dahms, K. Das, G. David, H. Delagrange, A. Denisov, D. D'Enterria, A. Deshpande, E. J. Desmond, O. Dietzsch, A. Dion, J. L. Drachenberg, O. Drapier, A. Drees, A. K. Dubey, A. Durum, V. Dzhordzhadze, Y. V. Efremenko, J. Egdemir, A. Enokizono, H. En'Yo, B. Espagnon, S. Esumi, D. E. Fields, F. Fleuret, S. L. Fokin, B. Forestier, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, Y. Fukao, S. Y. Fung, S. Gadrat, F. Gastineau, M. Germain, A. Glenn, M. Gonin, J. Gosset, Y. Goto, R. Granier De Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, H. Å Gustafsson, T. Hachiya, A. Hadj Henni, J. S. Haggerty, M. N. Hagiwara, H. Hamagaki, H. Harada, E. P. Hartouni, K. Haruna, M. Harvey, E. Haslum, K. Hasuko, R. Hayano, M. Heffner, T. K. Hemmick, J. M. Heuser, X. He, H. Hiejima, J. C. Hill, R. Hobbs, M. Holmes, W. Holzmann, K. Homma, B. Hong, T. Horaguchi, M. G. Hur, T. Ichihara, K. Imai, M. Inaba, D. Isenhower, L. Isenhower, M. Ishihara, T. Isobe, M. Issah, A. Isupov, B. V. Jacak, J. Jia, J. Jin, O. Jinnouchi, B. M. Johnson, K. S. Joo, D. Jouan, F. Kajihara, S. Kametani, N. Kamihara, M. Kaneta, J. H. Kang, T. Kawagishi, A. V. Kazantsev, S. Kelly, A. Khanzadeev, D. J. Kim, E. Kim, Y. S. Kim, E. Kinney, Á Kiss, E. Kistenev, A. Kiyomichi, C. Klein-Boesing, L. Kochenda, V. Kochetkov, B. Komkov, M. Konno, D. Kotchetkov, A. Kozlov, P. J. Kroon, G. J. Kunde, N. Kurihara, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, J. G. Lajoie, A. Lebedev, Y. Le Bornec, S. Leckey, D. M. Lee, M. K. Lee, M. J. Leitch, M. A.L. Leite, H. Lim, A. Litvinenko, M. X. Liu, X. H. Li, C. F. Maguire, Y. I. Makdisi, A. Malakhov, M. D. Malik, V. I. Manko, H. Masui, F. Matathias, M. C. McCain, P. L. McGaughey, Y. Miake, T. E. Miller, A. Milov, S. Mioduszewski, G. C. Mishra, J. T. Mitchell, D. P. Morrison, J. M. Moss, T. V. Moukhanova, D. Mukhopadhyay, J. Murata, S. Nagamiya, Y. Nagata, J. L. Nagle, M. Naglis, T. Nakamura, J. Newby, M. Nguyen, B. E. Norman, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, H. Okada, K. Okada, O. O. Omiwade, A. Oskarsson, I. Otterlund, K. Ozawa, D. Pal, A. P.T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, W. J. Park, S. F. Pate, H. Pei, J. C. Peng, H. Pereira, V. Peresedov, D. Yu Peressounko, C. Pinkenburg, R. P. Pisani, M. L. Purschke, A. K. Purwar, H. Qu, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, S. S.E. Rosendahl, P. Rosnet, P. Rukoyatkin, V. L. Rykov, S. S. Ryu, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, V. Samsonov, H. D. Sato, S. Sato, S. Sawada, V. Semenov, R. Seto, D. Sharma, T. K. Shea, I. Shein, T. A. Shibata, K. Shigaki, M. Shimomura, T. Shohjoh, K. Shoji, A. Sickles, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, S. Skutnik, W. C. Smith, 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, C. Suire, J. P. Sullivan, J. Sziklai, T. Tabaru, S. Takagi, E. M. Takagui, A. Taketani, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, A. Taranenko, P. Tarján, T. L. Thomas, M. Togawa, J. Tojo, H. Torii, R. S. Towell, V. N. Tram, I. Tserruya, Y. Tsuchimoto, S. K. Tuli, H. Tydesjö, N. Tyurin, C. Vale, H. Valle, H. W. Van Hecke, J. Velkovska, R. Vértesi, A. A. Vinogradov, E. Vznuzdaev, M. Wagner, X. R. Wang, Y. Watanabe, J. Wessels, S. N. White, N. Willis, D. Winter, C. L. Woody, M. Wysocki, W. Xie, A. Yanovich, S. Yokkaichi, G. R. Young, I. Younus, I. E. Yushmanov, W. A. Zajc, O. Zaudtke, C. Zhang, J. Zimányi, L. Zolin
  • Joint Institute for Nuclear Research, Dubna
  • Columbia University
  • Stony Brook University
  • RIKEN Nishina Center for Accelerator-Based Science
  • Riken BNL Research Center
  • New Mexico State University
  • Kyoto University
  • Université de Nantes
  • Brookhaven National Laboratory
  • Oak Ridge National Laboratory
  • Kurchatov Institute
  • Institut Pierre Simon Laplace, CNRS and CEA
  • University of California, Riverside
  • MST-8, Los Alamos National Laboratory
  • University of New Mexico
  • Petersburg Nuclear Physics Institute (PNPI)
  • Iowa State University
  • St. Petersburg State Polytechnical University
  • University of Münster
  • Cyclotron Application Laboratory
  • High Energy Accelerator Research Organization (KEK)
  • Yonsei University
  • Vanderbilt University
  • Georgia State University
  • Université Paris-Saclay
  • Eötvös Loránd University
  • Wigner Research Centre for Physics
  • Florida State University
  • University of São Paulo
  • Abilene Christian University
  • Weizmann Institute of Science Israel
  • University of Tennessee
  • Hiroshima University
  • University of Tsukuba
  • Kurchatov Institute
  • Université Blaise Pascal
  • University of Illinois at Urbana-Champaign
  • University of Tokyo
  • Lund University
  • Lawrence Livermore National Laboratory
  • Korea University
  • Tokyo Institute of Technology
  • Myongji University
  • Waseda University
  • University of Colorado Boulder
  • Seoul National University
  • Rikkyo University
  • Ip Paris
  • Banaras Hindu University
  • Nagasaki Institute of Applied Science
  • University of Debrecen

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)

Abstract

Measurements of the azimuthal anisotropy of high-pT neutral pion (π0) production in Au+Au collisions at sNN=200 GeV by the PHENIX experiment are presented. The data included in this article were collected during the 2004 Relativistic Heavy Ion Collider running period and represent approximately an order of magnitude increase in the number of analyzed events relative to previously published results. Azimuthal angle distributions of π0 mesons detected in the PHENIX electromagnetic calorimeters are measured relative to the reaction plane determined event-by-event using the forward and backward beam-beam counters. Amplitudes of the second Fourier component (v2) of the angular distributions are presented as a function of π0 transverse momentum (pT) for different bins in collision centrality. Measured reaction plane dependent π0 yields are used to determine the azimuthal dependence of the π0 suppression as a function of pT, RAA(Δ,pT). A jet-quenching motivated geometric analysis is presented that attempts to simultaneously describe the centrality dependence and reaction plane angle dependence of the π0 suppression in terms of the path lengths of hypothetical parent partons in the medium. This set of results allows for a detailed examination of the influence of geometry in the collision region and of the interplay between collective flow and jet-quenching effects along the azimuthal axis.

Original languageEnglish
Article number054907
JournalPhysical Review C - Nuclear Physics
Volume80
Issue number5
DOIs
Publication statusPublished - 13 Nov 2009

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