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High transverse momentum η meson production in p+p,d+Au, and Au+Au collisions at sNN=200 GeV

  • S. S. Adler
  • , S. Afanasiev
  • , C. Aidala
  • , N. N. Ajitanand
  • , Y. Akiba
  • , J. Alexander
  • , A. Al-Jamel
  • , R. Amirikas
  • , K. Aoki
  • , L. Aphecetche
  • , R. Armendariz
  • , 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, F. Bauer, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, M. T. Bjorndal, 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, J. Chiba, C. Y. Chi, M. Chiu, I. J. Choi, J. Choi, R. K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B. A. Cole, M. P. Comets, P. Constantin, M. Csanád, T. Csörgo, J. P. Cussonneau, K. Das, G. David, F. Deák, H. Delagrange, A. Denisov, D. D'Enterria, A. Deshpande, E. J. Desmond, A. Devismes, O. Dietzsch, J. L. Drachenberg, O. Drapier, A. Drees, K. A. Drees, R. Durietz, A. Durum, D. Dutta, V. Dzhordzhadze, Y. V. Efremenko, K. El Chenawi, A. Enokizono, H. En'Yo, B. Espagnon, S. Esumi, L. Ewell, D. E. Fields, C. Finck, F. Fleuret, S. L. Fokin, B. D. Fox, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, Y. Fukao, S. Y. Fung, S. Gadrat, S. Garpman, M. Germain, T. K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. G. De Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, W. Guryn, H. Å Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, E. P. Hartouni, M. Harvey, K. Hasuko, R. Hayano, N. Hayashi, M. Heffner, T. K. Hemmick, J. M. Heuser, X. He, M. Hibino, P. Hidas, H. Hiejima, J. C. Hill, R. Hobbs, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Horaguchi, T. Ichihara, V. V. Ikonnikov, K. Imai, M. Inaba, M. Inuzuka, D. Isenhower, L. 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, F. Kajihara, S. Kametani, N. Kamihara, M. Kaneta, J. H. Kang, S. S. Kapoor, K. Katou, M. Kaufman, T. Kawabata, A. V. Kazantsev, 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. Kinney, A. Kiss, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, R. Kohara, B. Komkov, M. Konno, M. Kopytine, D. Kotchetkov, A. Kozlov, P. J. Kroon, C. H. Kuberg, G. J. Kunde, K. Kurita, Y. Kuroki, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, V. Ladygin, J. G. Lajoie, A. Lebedev, Y. Le Bornec, S. Leckey, D. M. Lee, S. Lee, M. J. Leitch, M. A.L. Leite, H. Lim, A. Litvinenko, M. X. Liu, Y. Liu, X. H. Li, C. F. Maguire, Y. I. Makdisi, A. Malakhov, V. I. Manko, Y. Mao, G. Martinez, M. D. Marx, H. Masui, F. Matathias, T. Matsumoto, M. C. McCain, 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, H. Okada, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A. P.T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, W. J. Park, A. Parmar, S. F. Pate, H. Pei, T. Peitzmann, V. Penev, J. C. Peng, H. Pereira, V. Peresedov, A. Pierson, C. Pinkenburg, R. P. Pisani, F. Plasil, M. L. Purschke, A. K. Purwar, J. M. Qualls, 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, V. L. Rykov, S. S. Ryu, M. E. Sadler, B. Sahlmueller, 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, I. Shein, T. A. Shibata, K. Shigaki, T. Shiina, M. Shimomura, A. Sickles, 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, S. Takagi, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, A. Taranenko, P. Tarján, J. D. Tepe, T. L. Thomas, M. Togawa, J. Tojo, H. Torii, R. S. Towell, V. N. Tram, I. Tserruya, Y. Tsuchimoto, H. Tsuruoka, S. K. Tuli, H. Tydesjö, N. Tyurin, T. J. Uam, H. W. Van Hecke, J. Velkovska, M. Velkovsky, V. Veszprémi, L. Villatte, A. A. Vinogradov, M. A. Volkov, E. Vznuzdaev, X. R. Wang, Y. Watanabe, S. N. White, N. Willis, 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, S. J. Zhou, J. Zimányi, L. Zolin, X. Zong
  • Brookhaven National Laboratory
  • Joint Institute for Nuclear Research, Dubna
  • Columbia University
  • Stony Brook University
  • High Energy Accelerator Research Organization (KEK)
  • RIKEN (The Institute of Physical and Chemical Research)
  • New Mexico State University
  • Florida State University
  • Kyoto University
  • Université de Nantes
  • 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
  • University of Münster
  • Petersburg Nuclear Physics Institute (PNPI)
  • Riken BNL Research Center
  • Iowa State University
  • St. Petersburg State Polytechnical University
  • Lawrence Livermore National Laboratory
  • Cyclotron Application Laboratory
  • Bhabha Atomic Research Centre
  • Academia Sinica, Institute Of Physics
  • Yonsei University
  • Gangneung-Wonju National University
  • Université Paris-Saclay
  • Eötvös Loránd University
  • Wigner Research Centre for Physics
  • University of São Paulo
  • Abilene Christian University
  • Lund University
  • University of Tennessee
  • Vanderbilt University
  • Hiroshima University
  • University of Tsukuba
  • Kurchatov Institute
  • Weizmann Institute of Science Israel
  • Université Blaise Pascal
  • University of Illinois at Urbana-Champaign
  • University of Tokyo
  • Georgia State University
  • Waseda University
  • Korea University
  • Tokyo Institute of Technology
  • Myongji University
  • University of Colorado Boulder
  • Seoul National University
  • Nagasaki Institute of Applied Science
  • China Institute of Atomic Energy
  • Tsinghua University
  • Banaras Hindu University
  • University of Debrecen

Research output: Contribution to journalArticlepeer-review

Abstract

Inclusive transverse momentum spectra of η mesons in the range pTf2-12 GeV/c have been measured at midrapidity (|η|<0.35) by the PHENIX experiment at RHIC in p+p,d+Au, and Au+Au collisions at sNN=200 GeV. The η mesons are reconstructed through their η→γγ channel for the three colliding systems as well as through the η→π0π+π- decay mode in p+p and d+Au collisions. The nuclear modification factor in d+Au collisions, RdAu(pT)1.0-1.1, suggests at most only modest pT broadening ("Cronin enhancement"). In central Au+Au reactions, the η yields are significantly suppressed, with RAuAu(pT)0.2. The ratio of η to π0 yields is approximately constant as a function of pT for the three colliding systems in agreement with the high-pT world average of Rη/π00.5 in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions for a wide range of center-of-mass energies (sNN3-1800 GeV) as well as, for high scaled momentum xp, in e+e- annihilations at s=91.2 GeV. These results are consistent with a scenario where high-pT η production in nuclear collisions at the Relativistic Heavy Ion Collider is largely unaffected by initial-state effects but where light-quark mesons (π0,η) are equally suppressed due to final-state interactions of the parent partons in the dense medium produced in Au+Au reactions.

Original languageEnglish
Article number024909
JournalPhysical Review C - Nuclear Physics
Volume75
Issue number2
DOIs
Publication statusPublished - 27 Feb 2007

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