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Multiplicity and pseudorapidity distributions of photons in Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 GeV
Authors :
Adams, J. Aggarwal, M.M. Ahammed, Z. Amonett, J. Anderson, B.D. Arkhipkin, D. Averichev, G.S. Badyal, S.K. Bai, Y. Balewski, J. Barannikova, O. Barnby, L.S. Baudot, J. Bekele, S. Belaga, V.V. Bellwied, R. Berger, J. Bezverkhny, B.I. Bharadwaj, S. Bhasin, A. Bhati, A.K. Bichsel, H. Bielcik, J. Bielcikova, J. Billmeier, A. Bland, L.C. Blyth, C.O. Bonner, B.E. Botje, M. Boucham, A. Brandin, A.V. Bravar, A. Bystersky, M. V. Cadman, R. Cai, X.Z. Caines, H. Calderon De La Barca Sanchez, M. Castillo, J. Catu, O. Cebra, D. Chajecki, Z. Chaloupka, P. Chattopdhyay, S. Chen, H.F. Chen, Y. Cheng, J. Cherney, M. Chikanian, A. Christie, W. Coffin, J.P. Cormier, T.M. Cramer, J.G. Crawford, H.J. Das, D. Das, S. De Moura, M.M. Derevschikov, A.A. Didenko, L. Dietel, T. Dogra, S.M. Dong, W.J. Dong, X. Draper, J.E. Du, F. Dubey, A.K. Dunin, V.B. Dunlop, J.C. Dutta Mazumdar, M.R. Eckardt, V. Edwards, W.R. Efimov, L.G. Emelianov, V. Engelage, J. Eppley, G. Erazmus, B. Estienne, Magalie Fachini, P. Faivre, J. Fatemi, R. Fedorisin, J. Filimonov, K. Filip, P. Finch, E. Fine, V. Fisyak, Y. Fomenko, K. Fu, J. Gagliardi, C.A. Gaillard, L. Gans, J. Ganti, M.S. Gaudichet, L. Geurts, F. Ghazikhanian, V. Ghosh, P. Gonzalez, J.E. Grachov, O. Grebenyuk, O. Grosnick, D. Guertin, S.M. Guo, Y. Gupta, Anupam Gutierrez, T.D. Hallman, T.J. Hamed, A. Hardtke, D. Harris, J.W. Heinz, M. Henry, T.W. Hepplemann, S. Hippolyte, B. Hirsch, A. Hjort, E. Hoffmann, G.W. Huang, H.Z. Huang, S.L. Hughes, E. Humanic, T.J. Igo, G. Ishihara, A. Jacobs, P. Jacobs, W.W. Janik, M. Jiang, H. Jones, P.G. Judd, E.G. Kabana, S. Kang, K. Kaplan, M. Keane, D. Khodyrev, V.Yu. Kiryluk, J. Kisiel, A. Kislov, E.M. Klay, J. Klein, S.R. Koetke, D.D. Kollegger, T. Kopytine, M. Kotchenda, L. Kovalenko, A.D. Kramer, M. Kravtsov, P. Kravtsov, V.I. Krueger, K. Kuhn, C. Kulikov, A.I. Kumar, A. Kh.Kutuev, R. Kuznetsov, A.A. Lamont, M.A.C. Landgraf, J.M. Lange, S. Laue, F. Lauret, J. Lebedev, A. Lednicky, R. Lehocka, S. LeVine, M.J. Li, C. Li, Q. Li, Y. Lin, G. Lindenbaum, S.J. Lisa, M.A. Liu, F. Liu, L. Liu, Z. Liu, Q.J. Ljubicic, T. Llope, W.J. Long, H. Longacre, R.S. Lopez-Noriega, M. Love, W.A. Lu, Y. Ludlam, T. Lynn, D. Ma, G.L. G. Ma, J. Ma, Y.G. Magestro, D. Mahajan, S. Mahapatra, D.P. Majka, R. Mangotra, L.K. Manweiler, R. Margetis, S. Markert, C. Martin, L. Marx, J.N. Matis, H.S. Matulenko, Yu.A. McClain, C.J. McShane, T.S. Meissner, F. Melnick, Yu. Meschanin, A. Miller, M.L. Minaev, N.G. Mironov, C. Mischke, A. Mishra, D. Mitchell, J. Mohanty, B. Molnar, L. Moore, C.F. Morozov, D.A. Munhoz, M.G. Nandi, B.K. Nayak, S.K. Nayak, T.K. Nelson, J.M. Netrakanti, P.K. Nikitin, V.A. Nogach, L.V. Nurushev, S.B. Odyniec, G. Ogawa, A. Okorokov, V. Oldenburg, M. Olson, D. Pal, S.K. Panebratsev, Y. Panitkin, S.Y. Pavlinov, A.I. Pawlak, T. Peitzmann, T. Perevoztchikov, V. Perkins, C. Peryt, W. Petrov, V.A. Phatak, S.C. Picha, R. Pluta, J. Porile, N. Porter, J. Poskanzer, A.M. Potekhin, M. Potrebenikova, E. Potukuchi, B.V.K.S. Prindle, D. Pruneau, C. Putschke, J. Rai, G. Rakness, G. Raniwala, R. Raniwala, S. Ravel, O. Ray, R.L. Razin, S.V. Reichhold, D. Reid, J.G. Renault, G. Retiere, F. Ridiger, A. Ritter, H.G. Roberts, J.B. Rogachevskiy, O.V. Romero, J.L. Rose, A. Roy, C. Ruan, L. Sahoo, R. Sakrejda, I. Salur, S. Sandweiss, J. Sarsour, M. Savin, I. Sazhin, P.S. Schambach, J. Scharenberg, R.P. Schmitz, N. Schweda, K. Seger, J. Seyboth, P. Shahaliev, E. Shao, M. Shao, W. Sharma, M. Shen, W.Q. Shestermanov, K.E. Shimanskii, S.S. Sichtermann, E. Simon, F. Singaraju, R.N. Skoro, G. Smirnov, N. Snellings, R. Sood, G. Sorensen, P. Sowinski, J. Speltz, J. Spinka, H.M. Srivastava, B. Stadnik, A. Stanislaus, T.D.S. Stock, R. Stolpovsky, A. Strikhanov, M. Stringfellow, B. Suaide, A.A.P. Sugarbaker, E. Suire, C. Sumbera, M. Surrow, B. Symons, T.J.M. Szanto De Toledo, A. Szarwas, P. Tai, A. Takahashi, J. Tang, A.H. Tarnowsky, T. Thein, D. Thomas, J.H. Timoshenko, S. Tokarev, M. Trainor, T.A. Trentalange, S. Tribble, R.E. Tsai, O. Ulery, J. Ullrich, T. Underwood, D.G. Urkinbaev, A. Van Buren, G. Van Leeuwen, M. VanderMolen, A.M. Varma, R. M. Vasilevski, I. Vasiliev, A.N. Vernet, R. Vigdor, S.E. Viyogi, Y.P. Vokal, S. Voloshin, S.A. Vznuzdaev, M. T. Waggoner, W. Wang, F. Wang, G. Wang, X.L. Wang, Y. Wang, Z.M. Ward, H. Watson, J.W. Webb, J.C. Westfall, G.D. Wetzler, A. Whitten Jr., C. Wieman, H. Wissink, S.W. Witt, R. Wood, J. Xu, N. Xu, Z. Xu, Z.Z. Yamamoto, E. Yepes, P. Yurevich, V.I. Zanevsky, Y.V. Zhang, H. Zhang, W.M. Zhang, Z.P. Zoulkarneev, R. Zoulkarneeva, J. Zubarev, A.N. Institut de Recherches Subatomiques (IReS) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) Laboratoire SUBATECH Nantes (SUBATECH) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes) STAR Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Source :
Physical Review Letters, Physical Review Letters, American Physical Society, 2005, 95, 062301 (6 p.). ⟨10.1103/PhysRevLett.95.062301⟩
Publication Year :
2005
Publisher :
HAL CCSD, 2005.
Abstract
We present the first measurement of multiplicity and pseudorapidity distributions of photons in the pseudorapidity region 2.3 $\le$ $\eta$ $\le$ 3.7 for different centralities in Au + Au collisions at $\sqrt{s_{NN}}$ = 62.4 GeV. We find that the photon yield in this pseudorapidity range scales with the number of participating nucleons at all collision centralities studied. The pseudorapidity distribution of photons, dominated by neutral pion decays, has been compared to those of identified charged pions, photons, and inclusive charged particles from heavy ion and nucleon-nucleon collisions at various energies. The photon production in the measured pseudorapidity region has been shown to be consistent with the energy and centrality independent limiting fragmentation scenario.<br />Comment: 5 figures (version that will appear in Physical Review Letters)
Details
Language :
English
ISSN :
00319007 and 10797114
Database :
OpenAIRE
Journal :
Physical Review Letters, Physical Review Letters, American Physical Society, 2005, 95, 062301 (6 p.). ⟨10.1103/PhysRevLett.95.062301⟩
Accession number :
edsair.doi.dedup.....4da0c07d75d46efa408e61218b313964
Full Text :
https://doi.org/10.1103/PhysRevLett.95.062301⟩