1. Energy and system size dependence of ϕ meson production in Cu+Cu and Au+Au collisions
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M. Shao, G. Van Buren, L. Kotchenda, S. Hepplemann, Y. Panebratsev, D. Grosnick, V. Kouchpil, M. Heinz, Lee Stuart Barnby, J. C. Dunlop, S. S. Shi, Jaroslav Bielcik, J. S. Wang, T. W. Ludlam, Zubayer Ahammed, M. J. LeVine, M. R. Dutta Mazumdar, O. V. Rogachevskiy, Rolf K. Reed, A. Ridiger, W. Christie, J. M. Nelson, L. K. Mangotra, W. M. Zhang, V. Ghazikhanian, W. A. Love, D. D. Koetke, G. Lin, Anik Gupta, Y. G. Ma, W. Peryt, Marek Bombara, C. Nepali, M. J. Skoby, E. Elhalhuli, Jifa Tian, R. Manweiler, Hongfang Liu, J. L. Drachenberg, T. S. McShane, W. T. Waggoner, S. H. Zhang, Andrey Vasiliev, Jorn Henning Putschke, A. V. Brandin, A. Feng, Jay Roberts, A. M. Poskanzer, B. E. Bonner, O. D. Tsai, David Jonathan Hofman, M. Elnimr, M. C. Cervantes, A. Kechechyan, Andre Mischke, A. Ogawa, H. F. Chen, Thomas A. Trainor, W. R. Edwards, J. H. Thomas, A. Stadnik, Peter Martin Jacobs, M. Krus, R. Cendejas, C-Q. Li, R. P. Scharenberg, Christina Markert, J. Takahashi, D. Kettler, H. S. Matis, R. Witt, D. Thein, Sevil Salur, S. Mioduszewski, J. W. Harris, Raimond Snellings, H. Okada, S. B. Nurushev, S. Baumgart, Matthew Walker, V. Yu Khodyrev, R. N. Singaraju, I. Selyuzhenkov, Vitaly Okorokov, W. W. Jacobs, G. S. Averichev, J. Lauret, F. Videbæk, Sukalyan Chattopadhyay, S. Bharadwaj, B. K. Srivastava, I. M. Vasilevski, W. J. Llope, J. L. Romero, K. Kajimoto, E. Finch, Y. Li, S. M. Guertin, M. Kopytine, R. Lednicky, P. Seyboth, E. J. Garcia-Solis, M. Tokarev, Boris Hippolyte, V. Emelianov, A. K. Bhati, D. Keane, Nikolai Smirnov, S. E. Vigdor, Christian Claude Kuhn, A. P. Meschanin, Bernd Surrow, M. S. Ganti, P. Yepes, A. H. Tang, Xiangming Sun, D. P. Mahapatra, R. S. Hollis, Janet Elizabeth Seger, A. M. Hoffman, A. Szanto de Toledo, J. Kapitan, J. Mitchell, L. G. Efimov, Y. J. Sun, S. Kabana, Y. P. Viyogi, A. R. Timmins, S. M. Dogra, D. Tlusty, Mirko Planinic, Pawan Kumar Netrakanti, M. Zawisza, H. M. Spinka, Morton Kaplan, X. Z. Cai, C-H. Lee, T. K. Nayak, S. U. Chung, T. D. S. Stanislaus, C. A. Gagliardi, R. Derradi de Souza, B. I. Abelev, M. Calderon De La Barca Sanchez, Y. N. Gorbunov, J. E. Draper, O. Catu, O. I. Mall, H. H. Wieman, H. Zhang, T. Pawlak, Y. P. Lu, V. Perevoztchikov, R. S. Longacre, Bedangadas Mohanty, A. Kocoloski, S. Dash, T. J. Humanic, M. A.C. Lamont, B. D. Anderson, I.A. Savin, I. Sakrejda, Debasish Das, Raghunath Sahoo, Marcelo Gameiro Munhoz, D. J. Prindle, M. J. M. Codrington, N. K. Pruthi, J. X. Zuo, Madan M. Aggarwal, Fuqiang Wang, A. M. Vander Molen, F. Liu, Sergey Voloshin, G. Igo, Christine Nattrass, Guo-Liang Ma, G. Eppley, X. Lin, Qian Yue, M. Bystersky, J. Bouchet, S. LaPointe, A. Gordon, B. V.K.S. Potukuchi, E. Hjort, Y. F. Wu, J. Pluta, J. Engelage, R. Millner, J. P. Coffin, Jie Liu, W. L. Zhan, Z. P. Zhang, R. Varma, Premomoy Ghosh, Yu A. Matulenko, B. Grube, B. S. Page, S. Timoshenko, A. S. Hirsch, J. C. Webb, P. Kravtsov, Frank Simon, Andrew Rose, Y. Zhao, D. P. Kikola, I. K. Yoo, P. Fachini, J. M. Landgraf, M. Pachr, Hanna Paulina Zbroszczyk, R. E. Tribble, C. L. Jones, R. D. Majka, K. S.F.F. Guimaraes, J. Sowinski, M. A. Lisa, M. Strikhanov, D. R. Beavis, Gerald W Hoffmann, Y. Fisyak, Y. Wang, R. F. Clarke, B. Stringfellow, D. R. Gangadharan, E. G. Judd, Ki-Seok Choi, J. Sandweiss, H. Z. Huang, S. Vokal, M. DePhillips, J. Schambach, Michal Sumbera, W. Guryn, A. A. P. Suaide, Anju Bhasin, S. Bueltmann, O. G. Grebenyuk, R. P. Redwine, Y. Bai, S. W. Wissink, Y. Zhang, J. G. Cramer, Nikola Poljak, William Axel Leight, K. Kang, A. Shabetai, G. Wang, Elena Bruna, J. Baudot, J. Joseph, S. R. Klein, T. Tarnowsky, N. L. Subba, A. Lebedev, J. Kiryluk, J. H. Chen, G. M.S. Vasconcelos, M. Sarsour, D. A. Morozov, J. Fedorisin, M. Botje, Q. H. Xu, A. G. Knospe, Y. Pandit, D. L. Olson, Z. J. Sun, T. P. Burton, N. Schmitz, E. Shahaliev, H. Bichsel, G. Odyniec, A. A. Derevschikov, A. L. Trattner, Y. Zoulkarneeva, C. Zhong, Russell Richard Betts, P. Djawotho, D. G. Underwood, Jana Bielcikova, P. Sorensen, X. H. Shi, X. F. Wang, W. He, Peter Graham Jones, David Lynn, Q. Wang, M. J. Russcher, T. J. Hallman, J. Cheng, T. J. M. Symons, L. Didenko, Jing Zhou, M. Sharma, B. Erazmus, N. G. Minaev, N. Xu, P. Filip, Neeraj Gupta, D. Cebra, M. Estienne, G. D. Westfall, Petr Jákl, C. A. Whitten, Feng Jin, L. Ruan, R. Corliss, S. J. Lindenbaum, Basanta Kumar Nandi, B. Biritz, C. Roy, C. De Silva, Y. Xu, P. Chaloupka, Z. J. Xu, S. Trentalange, A. Chikanian, V. N. Tram, Ermes Braidot, D. Arkhipkin, Adam Ryszard Kisiel, H. J. Crawford, A. Hamed, R. Fatemi, Michael Joseph Betancourt, K. Krueger, A. Iordanova, J. A. Vanfossen, J. Callner, M. Cherney, Thomas Michael Cormier, Lokesh Kumar, B. Haag, Zebo Tang, Z. Chajecki, C. Perkins, T. Peitzmann, P. Kurnadi, M. R. Cosentino, F. Benedosso, T. G. Dedovich, T. Sakuma, S. C. Phatak, V. Fine, Jake Y. Chen, F. Du, V. Rykov, L. V. Nogach, M. J. Ng, V. I. Kravtsov, E. P. Sichtermann, L. C. Bland, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, L. Liu, M. C. Suarez, T. Ullrich, R. Zoulkarneev, L. Eun, M. S. Daugherity, R. L. Ray, D. Staszak, J. Ulery, H. G. Ritter, T. Ljubicic, O. Barannikova, R. Bellwied, L. Gaillard, H. Caines, Sudhir Raniwala, M. Wada, X. L. Wang, S. Margetis, M. van Leeuwen, X. Dong, and S. K. Pal
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Meson ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,Nuclear Theory ,Hadron ,Strangeness ,Lambda baryon ,Phi meson ,01 natural sciences ,Nuclear physics ,Baryon ,Particle decay ,Pair production ,0103 physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment ,010306 general physics - Abstract
We study the beam-energy and system-size dependence of phi meson production (using the hadronic decay mode phi -> K(+) K(-)) by comparing the new results from Cu + Cu collisions and previously reported Au + Au collisions at root s(NN) = 62.4 and 200 GeV measured in the STAR experiment at RHIC. Data presented in this Letter are from mid-rapidity (vertical bar y vertical bar ) and net strangeness = 2 (Xi). The enhancement for phi mesons is observed to be higher at root s(NN) = 200 GeV compared to 62.4 GeV. These observations for the produced phi(s (s) over bar) mesons clearly suggest that, at these collision energies, the source of enhancement of strange hadrons is related to the formation of a dense partonic medium in high energy nucleus-nucleus collisions and cannot be alone due to canonical suppression of their production in smaller systems. (C) 2009 Elsevier B.V. All rights reserved.
- Published
- 2009
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