arxiv: 1006.1961 · v1 · pith:U2V7TVK2new · submitted 2010-06-10 · ⚛️ nucl-ex · hep-ex· nucl-th

K*0 production in Cu+Cu and Au+Au collisions at sqrt{s_NN} = 62.4 GeV and 200 GeV

M.M. Aggarwal , Z. Ahammed , A.V. Alakhverdyants , I. Alekseev , J. Alford , B.D. Anderson , Daniel Anson , D. Arkhipkin

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G.S. Averichev J. Balewski L.S. Barnby S. Baumgart D.R. Beavis R. Bellwied M.J. Betancourt R.R. Betts A. Bhasin A.K. Bhati H. Bichsel J. Bielcik J. Bielcikova B. Biritz L.C. Bland B.E. Bonner W. Borowski J. Bouchet E. Braidot A.V. Brandin A. Bridgeman E. Bruna S. Bueltmann I. Bunzarov T.P. Burton X.Z. Cai H. Caines M. Calderon O. Catu D. Cebra R. Cendejas M.C. Cervantes Z. Chajecki P. Chaloupka S. Chattopadhyay H.F. Chen J.H. Chen J.Y. Chen J. Cheng M. Cherney A. Chikanian K.E. Choi W. Christie P. Chung R.F. Clarke M.J.M. Codrington R. Corliss J.G. Cramer H.J. Crawford D. Das S. Dash A. Davila Leyva L.C. De Silva R.R. Debbe T.G. Dedovich A.A. Derevschikov R. Derradi de Souza L. Didenko P. Djawotho S.M. Dogra X. Dong J.L. Drachenberg J.E. Draper J.C. Dunlop M.R. Dutta Mazumdar L.G. Efimov E. Elhalhuli M. Elnimr J. Engelage G. Eppley B. Erazmus M. Estienne L. Eun O. Evdokimov P. Fachini R. Fatemi J. Fedorisin R.G. Fersch P. Filip E. Finch V. Fine Y. Fisyak C.A. Gagliardi D.R. Gangadharan M.S. Ganti E.J. Garcia-Solis A. Geromitsos F. Geurts V. Ghazikhanian P. Ghosh Y.N. Gorbunov A. Gordon O. Grebenyuk D. Grosnick S.M. Guertin A. Gupta W. Guryn B. Haag A. Hamed L-X. Han J.W. Harris J.P. Hays-Wehle M. Heinz S. Heppelmann A. Hirsch E. Hjort A.M. Hoffman G.W. Hoffmann D.J. Hofman B. Huang H.Z. Huang T.J. Humanic L. Huo G. Igo P. Jacobs W.W. Jacobs C. Jena F. Jin C.L. Jones P.G. Jones J. Joseph E.G. Judd S. Kabana K. Kajimoto K. Kang J. Kapitan K. Kauder D. Keane A. Kechechyan D. Kettler D.P. Kikola J. Kiryluk A. Kisiel V. Kizka S.R. Klein A.G. Knospe A. Kocoloski D.D. Koetke T. Kollegger J. Konzer I. Koralt L. Koroleva W. Korsch L. Kotchenda V. Kouchpil P. Kravtsov K. Krueger M. Krus L. Kumar P. Kurnadi M.A.C. Lamont J.M. Landgraf S. LaPointe J. Lauret A. Lebedev R. Lednicky C-H. Lee J.H. Lee W. Leight M.J. LeVine C. Li L. Li N. Li W. Li X. Li Y. Li Z.M. Li G. Lin S.J. Lindenbaum M.A. Lisa F. Liu H. Liu J. Liu T. Ljubicic W.J. Llope R.S. Longacre W.A. Love Y. Lu E.V. Lukashov X. Luo G.L. Ma Y.G. Ma D.P. Mahapatra R. Majka O.I. Mall L.K. Mangotra R. Manweiler S. Margetis C. Markert H. Masui H.S. Matis Yu.A. Matulenko D. McDonald T.S. McShane A. Meschanin R. Milner N.G. Minaev S. Mioduszewski A. Mischke M.K. Mitrovski B. Mohanty M.M. Mondal B. Morozov D.A. Morozov M.G. Munhoz B.K. Nandi C. Nattrass T.K. Nayak J.M. Nelson P.K. Netrakanti M.J. Ng L.V. Nogach S.B. Nurushev G. Odyniec A. Ogawa V. Okorokov E.W. Oldag D. Olson M. Pachr B.S. Page S.K. Pal Y. Pandit Y. Panebratsev T. Pawlak T. Peitzmann C. Perkins W. Peryt S.C. Phatak P. Pile M. Planinic M.A. Ploskon J. Pluta D. Plyku N. Poljak A.M. Poskanzer B.V.K.S. Potukuchi C.B. Powell D. Prindle C. Pruneau N.K. Pruthi P.R. Pujahari J. Putschke H. Qiu R. Raniwala S. Raniwala R.L. Ray R. Redwine R. Reed H.G. Ritter J.B. Roberts O.V. Rogachevskiy J.L. Romero A. Rose C. Roy L. Ruan R. Sahoo S. Sakai I. Sakrejda T. Sakuma S. Salur J. Sandweiss E. Sangaline J. Schambach R.P. Scharenberg N. Schmitz T.R. Schuster J. Seele J. Seger I. Selyuzhenkov P. Seyboth E. Shahaliev M. Shao M. Sharma S.S. Shi E.P. Sichtermann F. Simon R.N. Singaraju M.J. Skoby N. Smirnov P. Sorensen J. Sowinski H.M. Spinka B. Srivastava T.D.S. Stanislaus D. Staszak J.R. Stevens R. Stock M. Strikhanov B. Stringfellow A.A.P. Suaide M.C. Suarez N.L. Subba M. Sumbera X.M. Sun Y. Sun Z. Sun B. Surrow D.N. Svirida T.J.M. Symons A. Szanto De Toledo J. Takahashi A.H. Tang Z. Tang L.H. Tarini T. Tarnowsky D. Thein J.H. Thomas J. Tian A.R. Timmins S. Timoshenko D. Tlusty M. Tokarev T.A. Trainor V.N. Tram S. Trentalange R.E. Tribble O.D. Tsai J. Ulery T. Ullrich D.G. Underwood G. Van Buren M. van Leeuwen G. van Nieuwenhuizen J.A. Vanfossen Jr. R. Varma G.M.S. Vasconcelos A.N. Vasiliev F. Videbaek Y.P. Viyogi S. Vokal S.A. Voloshin M. Wada M. Walker F. Wang G. Wang H. Wang J.S. Wang Q. Wang X.L. Wang Y. Wang G. Webb J.C. Webb G.D. Westfall C. Whitten Jr. H. Wieman S.W. Wissink R. Witt Y.F. Wu W. Xie H. Xu N. Xu Q.H. Xu W. Xu Y. Xu Z. Xu L. Xue Y. Yang P. Yepes K. Yip I-K. Yoo Q. Yue M. Zawisza H. Zbroszczyk W. Zhan J.B. Zhang S. Zhang W.M. Zhang X.P. Zhang Y. Zhang Z.P. Zhang J. Zhao C. Zhong J. Zhou W. Zhou X. Zhu Y.H. Zhu R. Zoulkarneev Y. Zoulkarneeva

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keywords productioncollisionshadronicmeasuredmomentumsqrttransverseagree

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We report on K*0 production at mid-rapidity in Au+Au and Cu+Cu collisions at \sqrt{s_{NN}} = 62.4 and 200 GeV collected by the Solenoid Tracker at RHIC (STAR) detector. The K*0 is reconstructed via the hadronic decays K*0 \to K+ pi- and \bar{K*0} \to K-pi+. Transverse momentum, pT, spectra are measured over a range of pT extending from 0.2 GeV/c to 5 GeV/c. The center of mass energy and system size dependence of the rapidity density, dN/dy, and the average transverse momentum, <pT>, are presented. The measured N(K*0)/N(K) and N(\phi)/N(K*0) ratios favor the dominance of re-scattering of decay daughters of K*0 over the hadronic regeneration for the K*0 production. In the intermediate pT region (2.0 < pT < 4.0 GeV/c), the elliptic flow parameter, v2, and the nuclear modification factor, RCP, agree with the expectations from the quark coalescence model of particle production.

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