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Energy and system size dependence of phi meson production in Cu plus Cu and Au plus Au collisions

**Autoria(s):** ABELEV, B. I.; AGGARWAL, M. M.; AHAMMED, Z.; ANDERSON, B. D.; ARKHIPKIN, D.; AVERICHEV, G. S.; BAI, Y.; BALEWSKI, J.; BARANNIKOVA, O.; BARNSBY, L. S.; BAUDOT, J.; BAUMGART, S.; BEAVIS, D. R.; BELLWIED, R.; BENEDOSSO, F.; BETANCOURT, M. J.; BETTS, R. R.; BHARADWAJ, S.; BHASIN, A.; BHATI, A. K.; BICHSEL, H.; BIELCIK, J.; BIELCIKOVA, J.; BIRITZ, B.; BLAND, L. C.; BOMBARA, M.; BONNER, B. E.; BOTJE, M.; BOUCHET, J.; BRAIDOT, E.; BRANDIN, A. V.; BRUNA, E.; BUELTMANN, S.; BURTON, T. P.; BYSTERSKY, M.; CAI, X. Z.; CAINES, H.; SANCHEZ, M. Calderon de la Barca; CALLNER, J.; CATU, O.; CEBRA, D.; CENDEJAS, R.; CERVANTES, M. C.; CHAJECKI, Z.; CHALOUPKA, P.; CHATTOPADHYAY, S.; CHEN, H. F.; CHEN, J. H.; CHEN, J. Y.; CHENG, J.; CHERNEY, M.; CHIKANIAN, A.; CHOI, K. E.; CHRISTIE, W.; CHUNG, S. U.; CLARKE, R. F.; CODRINGTON, M. J.; COFFIN, J. P.; CORLISS, R.; CORMIER, T. M.; Cosentino, Mauro Rogerio; CRAMER, J. G.; CRAWFORD, H. J.; DAS, D.; DASH, S.; DAUGHERITY, M.; SILVA, C. De; DEDOVICH, T. G.; DEPHILLIPS, M.; DEREVSCHIKOV, A. A.; SOUZA, R. Derradi de; DIDENKO, L.; DJAWOTHO, P.; DOGRA, S. M.; DONG, X.; DRACHENBERG, J. L.; DRAPER, J. E.; DU, F.; DUNLOP, J. C.; MAZUMDAR, M. R. Dutta; EDWARDS, W. R.; EFIMOV, L. G.; ELHALHULI, E.; ELNIMR, M.; EMELIANOV, V.; ENGELAGE, J.; EPPLEY, G.; ERAZMUS, B.; ESTIENNE, M.; EUN, L.; FACHINI, P.; FATEMI, R.; FEDORISIN, J.; FENG, A.; FILIP, P.; FINCH, E.; FINE, V.; FISYAK, Y.; GAGLIARDI, C. A.; GAILLARD, L.; GANGADHARAN, D. R.; GANTI, M. S.; GARCIA-SOLIS, E.; GHAZIKHANIAN, V.; GHOSH, P.; GORBUNOV, Y. N.; GORDON, A.; GREBENYUK, O.; GROSNICK, D.; GRUBE, B.; GUERTIN, S. M.; GUIMARAES, K. S. F. F.; GUPTA, A.; GUPTA, N.; GURYN, W.; HAAG, B.; HALLMAN, T. J.; HAMED, A.; HARRIS, J. W.; HE, W.; HEINZ, M.; HEPPLEMANN, S.; HIPPOLYTE, B.; HIRSCH, A.; HJORT, E.; HOFFMAN, A. M.; HOFFMANN, G. W.; HOFMAN, D. J.; HOLLIS, R. S.; HUANG, H. Z.; HUMANIC, T. J.; IGO, G.; IORDANOVA, A.; JACOBS, P.; JACOBS, W. W.; JAKI, P.; JIN, F.; JONES, C. L.; JONES, P. G.; JOSEPH, J.; JUDD, E. G.; KABANA, S.; KAJIMOTO, K.; KANG, K.; KAPITAN, J.; KAPLAN, M.; KEANE, D.; KECHECHYAN, A.; KETTLER, D.; KHODYREV, V. Yu.; KIKOLA, D. P.; KIRYLUK, J.; KISIEL, A.; KLEIN, S. R.; KNOSPE, A. G.; KOCOLOSKI, A.; KOETKE, D. D.; KOPYTINE, M.; KOTCHENDA, L.; KOUCHPIL, V.; KRAVTSOV, P.; KRAVTSOV, V. I.; KRUEGER, K.; KRUS, M.; KUHN, C.; KUMAR, L.; KURNADI, P.; LAMONT, M. A. C.; LANDGRAF, J. M.; LAPOINTE, S.; LAURET, J.; LEBEDEV, A.; LEDNICKY, R.; LEE, C. -H.; LEIGHT, W.; LEVINE, M. J.; LI, C.; LI, Y.; LIN, G.; LIN, X.; LINDENBAUM, S. J.; LISA, M. A.; LIU, F.; LIU, H.; LIU, J.; LIU, L.; LJUBICIC, T.; LLOPE, W. J.; LONGACRE, R. S.; LOVE, W. A.; LU, Y.; LUDLAM, T.; LYNN, D.; MA, G. L.; MA, Y. G.; MAHAPATRA, D. P.; MAJKA, R.; MALL, O. I.; MANGOTRA, L. K.; MANWEILER, R.; MARGETIS, S.; MARKERT, C.; MATIS, H. S.; MATULENKO, Yu. A.; MCSHANE, T. S.; MESCHANIN, A.; MILLNER, R.; MINAEV, N. G.; MIODUSZEWSKI, S.; MISCHKE, A.; MITCHELL, J.; MOHANTY, B.; MOROZOV, D. A.; Munhoz, Marcelo Gameiro; NANDI, B. K.; NATTRASS, C.; NAYAK, T. K.; NELSON, J. M.; NEPALI, C.; NETRAKANTI, P. K.; NG, M. J.; NOGACH, L. V.; NURUSHEV, S. B.; ODYNIEC, G.; OGAWA, A.; OKADA, H.; OKOROKOV, V.; OLSON, D.; PACHR, M.; PAGE, B. S.; PAL, S. K.; PANDIT, Y.; PANEBRATSEV, Y.; PAWLAK, T.; PEITZMANN, T.; PEREVOZTCHIKOV, V.; PERKINS, C.; PERYT, W.; PHATAK, S. C.; PLANINIC, M.; PLUTA, J.; POLJAK, N.; POSKANZER, A. M.; POTUKUCHI, B. V. K. S.; PRINDLE, D.; PRUNEAU, C.; PRUTHI, N. K.; PUTSCHKE, J.; RANIWALA, R.; RANIWALA, S.; RAY, R. L.; REDWINE, R.; REED, R.; RIDIGER, A.; RITTER, H. G.; ROBERTS, J. B.; ROGACHEVSKIY, O. V.; ROMERO, J. L.; ROSE, A.; ROY, C.; RUAN, L.; RUSSCHER, M. J.; RYKOV, V.; SAHOO, R.; SAKREJDA, I.; SAKUMA, T.; SALUR, S.; SANDWEISS, J.; SARSOUR, M.; SAVIN, I.; SCHAMBACH, J.; SCHARENBERG, R. P.; SCHMITZ, N.; SEGER, J.; SELYUZHENKOV, I.; SEYBOTH, R.; SHABETAI, A.; SHAHALIEV, E.; SHAO, M.; SHARMA, M.; SHI, S. S.; SHI, X. -H.; SICHTERMANN, E.; SIMON, F.; SINGARAJU, R. N.; SKOBY, M. J.; SMIRNOV, N.; SNELLINGS, R.; SORENSEN, P.; SOWINSKI, J.; SPINKA, H. M.; SRIVASTAVA, B.; STADNIK, A.; STANISLAUS, T. D. S.; STASZAK, D.; STRIKHANOV, M.; STRINGFELLOW, B.; Suaide, Alexandre Alarcon do Passo; SUAREZ, M. C.; SUBBA, N. L.; SUMBERA, M.; SUN, X. M.; SUN, Y.; SUN, Z.; SURROW, B.; SYMONS, T. J. M.; Szanto de Toledo, Alejandro; TAKAHASHI, J.; TANG, A. H.; TANG, Z.; TARNOWSKY, T.; THEIN, D.; THOMAS, J. H.; TIAN, J.; TIMMINS, A. R.; TIMOSHENKO, S.; TLUSTY, D.; TOKAREV, M.; TRAINOR, T. A.; TRAM, V. N.; TRATTNER, A. L.; TRENTALANGE, S. .; TRIBBLE, R. E.; TSAI, O. D.; ULERY, J.; ULLRICH, T.; UNDERWOOD, D. G.; BUREN, G. Van; LEEUWEN, M. van; MOLEN, A. M. Vander; VANFOSSEN JR., J. A.; VARMA, R.; VASCONCELOS, G. M. S.; VASILEVSKI, I. M.; VASILIEV, A. N.; VIDEBAEK, F.; VIGDOR, S. E.; VIYOGI, Y. P.; VOKAL, S.; VOLOSHIN, S. A.; WADA, M.; WAGGONER, W. T.; WALKER, M.; WANG, F.; WANG, G.; WANG, J. S.; WANG, Q.; WANG, X.; WANG, X. L.; WANG, Y.; WEBB, J. C.; WESTFALL, G. D.; WHITTEN JR., C.; WIEMAN, H.; WISSINK, S. W.; WITT, R.; WU, Y.; XU, N.; XU, Q. H.; XU, Y.; XU, Z.; YEPES, P.; YOO, I. -K.; YUE, Q.; ZAWISZA, M.; ZBROSZCZYK, H.; ZHAN, W.; ZHANG, H.; ZHANG, S.; ZHANG, W. M.; ZHANG, Y.; ZHANG, Z. P.; ZHAO, Y.; ZHONG, C.; ZHOU, J.; ZOULKARNEEV, R.; ZOULKARNEEVA, Y.; ZUO, J. X.
Contribuinte(s)	UNIVERSIDADE DE SÃO PAULO
Data(s)	20/10/2012 20/10/2012 2009
Resumo	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 < 0.5) for 0.4 < p(T) < 5 GeV/c. At a given beam energy, the transverse momentum distributions for phi mesons are observed to be similar in yield and shape for Cu + Cu and Au + Au colliding systems with similar average numbers of participating nucleons. The phi meson yields in nucleus-nucleus collisions, normalized by the average number of participating nucleons, are found to be enhanced relative to those from p + p collisions. The enhancement for phi mesons lies between strange hadrons having net strangeness = 1 (K(-) and <(A)over 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. U.S. Department of Energy (DOE) Department of Energy (DOE), Office of Nuclear Physics (NP) and HEP US NSF U.S. National Science Foundation (NSF) Sloan Foundation Sloan Foundation Deutsche Forschungsgemeinschaf (DFG) DFG Excellence Cluster EXC153 of Germany CNRS/IN2P3 CNRS/IN2P3 RA RA RPL RPL EMN of France EMN of France STFC and EPSRC of the United Kingdom STFC and EPSRC of the United Kingdom FAPESP of Brazil Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Russian Ministry of Sci. and Tech. Russian Ministry of Sci. and Tech. NNSFC Natural Science Foundation of China Natural Science Foundation of China (NSFC) CAS of China Chinese Academy of Sciences (CAS) MoST of China MoST of China MoE of China MoE of China IRP and GA of the Czech Republic IRP and GA of the Czech Republic Foundation for Fundamental Research on Matter (FOM) FOM of the Netherlands Department of Atomic Energy of India (DAE) DAE of the Government of India DST of the Government of India DST of the Government of India India Council for Scientific and Industrial Research (CSIR) CSIR of the Government of India Swiss NSF Swiss National Science Foundation (SNSF) Polish State Committee for Scientific Research Polish State Committee for Scientific Research Korea Sci. & Eng. Foundation Korea Sci. & Eng. Foundation
Identificador	PHYSICS LETTERS B, v.673, n.3, p.183-191, 2009 0370-2693 http://producao.usp.br/handle/BDPI/29511 10.1016/j.physletb.2009.02.037 http://dx.doi.org/10.1016/j.physletb.2009.02.037
Idioma(s)	eng
Publicador	ELSEVIER SCIENCE BV
Relação	Physics Letters B
Direitos	restrictedAccess Copyright ELSEVIER SCIENCE BV
Palavras-Chave	#Particle production #Strangeness enhancement #Canonical suppression #Quark-gluon plasma #Resonances #QUARK-GLUON PLASMA #HEAVY-ION COLLISIONS #PROTON-PROTON COLLISIONS #STRANGENESS ENHANCEMENT #NUCLEUS COLLISIONS #PP COLLISIONS #MODEL #RULE #COLLABORATION #CONSERVATION #Physics, Multidisciplinary
Tipo	article original article publishedVersion

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