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$\phi$ meson production in Au+Au and p+p collisions at $\sqrt{s_{NN}}$= 200 GeV

J. Adams C. Adler M.M. Aggarwal Z. Ahammed J. Amonett B.D. Anderson M. Anderson D. Arkhipkin G.S. Averichev S.K. Badyal J. Balewski O. Barannikova L.S. Barnby J. Baudot 1 S. Bekele V.V. Belaga R. Bellwied J. Berger B.I. Bezverkhny S. Bhardwaj A.K. Bhati H. Bichsel A. Billmeier L.C. Bland C.O. Blyth B.E. Bonner M. Botje A. Boucham 2 A.V. Brandin A. Bravar R. Cadman X.Z. Cai H. Caines M. Calderon de la Barca Sanchez J. Carroll J. Castillo D. Cebra P. Chaloupka S. Chattopdhyay H.F. Chen Y. Chen S.P. Chernenko M. Cherney A. Chikanian W. Christie J.P. Coffin 1 T.M. Cormier J.G. Cramer H.J. Crawford D. Das S. Das A.A. Derevschikov L. Didenko T. Dietel W.J. Dong X. Dong J.E. Draper F. Du A.K. Dubey V.B. Dunin J.C. Dunlop M.R. Dutta Mazumdar V. Eckardt L.G. Efimov V. Emelianov J. Engelage G. Eppley B. Erazmus 2 Magali Estienne 2 P. Fachini V. Faine J. Faivre 1 R. Fatemi K. Filimonov P. Filip E. Finch Y. Fisyak D. Flierl K.J. Foley J. Fu C.A. Gagliardi N. Gagunashvili J. Gans M.S. Ganti L. Gaudichet 2 Marie Germain 1 F. Geurts V. Ghazikhanian P. Ghosh J.E. Gonzalez O. Grachov O. Grebenyuk S. Gronstal D. Grosnick M. Guedon 1 S.M. Guertin Anupam Gupta T.D. Gutierrez T.J. Hallman A. Hamed D. Hardtke J.W. Harris M. Heinz T.W. Henry S. Hepplemann B. Hippolyte A. Hirsch E. Hjort G.W. Hoffmann M. Horsley H.Z Huang S.L. Huang E. Hughes T.J. Humanic G. Igo A. Ishihara P. Jacobs W.W. Jacobs M. Janik H. Jiang I. Johnson P.G. Jones E.G. Judd S. Kabana M. Kaplan D. Keane V.Yu. Khodyrev J. Kiryluk A. Kisiel J. Klay S.R. Klein A. Klyachko D.D. Koetke T. Kollegger M. Kopytine L. Kotchenda A.D. Kovalenko M. Kramer P. Kravtsov V.I. Kravtsov K. Krueger C. Kuhn 1 A.I. Kulikov A. Kumar G.J. Kunde C.L. Kunz R. Kh.Kutuev A.A. Kuznetsov M.A.C. Lamont J.M. Landgraf S. Lange B. Lasiuk F. Laue J. Lauret A. Lebedev R. Lednicky M.J. Levine C. Li Q. Li S.J. Lindenbaum M.A. Lisa F. Liu L. Liu Z. Liu Q.J. Liu T. Ljubicic W.J. Llope H. Long R.S. Longacre M. Lopez-Noriega W.A. Love T. Ludlam D. Lynn J.G. Ma Y.G. Ma D. Magestro S. Mahajan L.K. Mangotra D.P. Mahapatra R. Majka R. Manweiler S. Margetis C. Markert Lilian Martin 2 J.N. Marx H.S. Matis Yu.A. Matulenko C.J. Mcclain T.S. Mcshane F. Meissner Yu. Melnick A. Meschanin M.L. Miller Z. Milosevich N.G. Minaev C. Mironov A. Mischke D. Mishra J. Mitchell B. Mohanty L. Molnar C.F. Moore M.J. Mora-Corral D.A. Morozov V. Morozov M.M. de Moura M.G. Munhoz B.K. Nandi S.K. Nayak T.K. Nayak J.M. Nelson P. K. Netrakanti V.A. Nikitin L.V. Nogach B. Norman S.B. Nurushev G. Odyniec A. Ogawa V. Okorokov M. Oldenburg D. Olson G. Paic S.K. Pal Y. Panebratsev S.Y. Panitkin A.I. Pavlinov T. Pawlak T. Peitzmann V. Perevoztchikov C. Perkins W. Peryt V.A. Petrov S.C. Phatak R. Picha J. Pluta N. Porile J. Porter A.M. Poskanzer M. Potekhin E. Potrebenikova B.V.K.S. Potukuchi D. Prindle C. Pruneau J. Putschke G. Rai G. Rakness R. Raniwala S. Raniwala O. Ravel 2 R.L. Ray S.V. Razin D. Reichhold J.G. Reid G. Renault 2 F. Retiere A. Ridiger H.G. Ritter J.B. Roberts O.V. Rogachevskiy J.L. Romero A. Rose C. Roy 2 L. Ruan R. Sahoo I. Sakrejda S. Salur J. Sandweiss I. Savin J. Schambach R.P. Scharenberg N. Schmitz L.S. Schroeder K. Schweda J. Seger P. Seyboth E. Shahaliev M. Shao M. Sharma K.E. Shestermanov S.S. Shimanskiy R.N. Singaraju F. Simon G. Skoro N. Smirnov R. Snellings G. Sood P. Sorensen J. Sowinski H.M. Spinka B. Srivastava S. Stanislaus R. Stock A. Stolpovsky M. Strikhanov B. Stringfellow C. Struck A.A.P. Suaide E. Sugarbaker C. Suire M. Sumbera B. Surrow T.J.M. Symons A. Szanto de Toledo P. Szarwas A. Tai J. Takahashi A.H. Tang D. Thein J.H. Thomas S. Timoshenko M. Tokarev M.B. Tonjes T.A. Trainor S. Trentalange R.E. Tribble O. Tsai T. Ullrich D.G. Underwood G. van Buren A.M. Vandermolen R. Varma I. Vasilevski A.N. Vasiliev M. Vasiliev S.E. Vigdor Y.P. Viyogi S.A. Voloshin M. Vznuzdaev W. Waggoner F. Wang Gang Wang X.L. Wang Y. Wang Z.M. Wang H. Ward J.W. Watson J.C. Webb R. Wells G.D. Westfall C. Whitten Jr. H. Wieman R. Willson R. Witt J. Wood N. Xu Z. Xu Z.Z. Xu E. Yamamoto P. Yepes V.I. Yurevich B. Yuting Y.V. Zanevski H. Zhang W.M. Zhang Z.P. Zhang Z..P. Zhaomin Z.P. Zizong P.A. Zolnierczuk R. Zoulkarneev J. Zoulkarneeva A.N. Zubarev
Abstract : We report the STAR measurement of Phi meson production in Au+Au and p+p collisions at sqrt (s)=200 GeV. Using the event mixing technique, the Phi spectra and yields are obtained at mid-rapidity for five centrality bins in Au+Au collisions and for non-singly-diffractive p+p collisions. It is found that the Phi transverse momentum distributions from Au+Au collisions are better fitted with a single-exponential while the p+p spectrum is better described by a double-exponential distribution. The measured nuclear modification factors indicate that Phi production in central Au+Au collisions is suppressed relative to peripheral collisions when scaled by the number of binary collisions. The systematics of versus centrality and the constant Phi/K- ratio versus beam species, centrality, and collision energy rule out kaon coalescence as the dominant mechanism for Phi production.
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Submitted on : Monday, November 22, 2004 - 9:18:00 AM
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J. Adams, C. Adler, M.M. Aggarwal, Z. Ahammed, J. Amonett, et al.. $\phi$ meson production in Au+Au and p+p collisions at $\sqrt{s_{NN}}$= 200 GeV. Physics Letters B, Elsevier, 2005, 612, pp.181-189. ⟨10.1016/j.physletb.2004.12.082⟩. ⟨in2p3-00023325⟩

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