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

B.I. Abelev M.M. Aggarwal Z. Ahammed B.D. Anderson D. Arkhipkin G.S. Averichev Y. Bai J. Balewski O. Barannikova L.S. Barnby J. Baudot 1 S. Baumgart V.V. Belaga A. Bellingeri-Laurikainen 2 R. Bellwied F. Benedosso R.R. Betts S. Bhardwaj A. Bhasin A.K. Bhati H. Bichsel J. Bielcik J. Bielcikova L.C. Bland S.-L. Blyth M. Bombara B.E. Bonner M. Botje J. Bouchet 2 A.V. Brandin A. Bravar T.P. Burton M. Bystersky R.V. Cadman X.Z. Cai H. Caines M. Calderon de la Barca Sanchez J. Callner O. Catu D. Cebra Z. Chajecki P. Chaloupka S. Chattopadhyay H.F. Chen J.H. Chen J.Y. Chen J. Cheng M. Cherney A. Chikanian W. Christie S.U. Chung J.P. Coffin 1 T.M. Cormier M.R. Cosentino J.G. Cramer H.J. Crawford D. Das S. Dash M. Daugherity M.M. de Moura T.G. Dedovich M. Dephillips A.A. Derevschikov L. Didenko T. Dietel P. Djawotho S.M. Dogra X. Dong J.L. Drachenberg J.E. Draper F. Du V.B. Dunin J.C. Dunlop M.R. Dutta Mazumdar V. Eckardt W.R. Edwards L.G. Efimov V. Emelianov J. Engelage G. Eppley B. Erazmus 2 Magali Estienne 1 P. Fachini R. Fatemi J. Fedorisin A. Feng P. Filip E. Finch V. Fine Y. Fisyak J. Fu C.A. Gagliardi L. Gaillard M.S. Ganti E. Garcia-Solis V. Ghazikhanian P. Ghosh Y.G. Gorbunov H. Gos O. Grebenyuk D. Grosnick B. Grube S.M. Guertin K.S.F.F. Guimaraes N. Gupta B. Haag T.J. Hallman A. Hamed J.W. Harris W. He M. Heinz T.W. Henry S. Heppelmann B. Hippolyte 1 A. Hirsch E. Hjort A.M. Hoffman G.W. Hoffmann D.J. Hofman R.S. Hollis M.J. Horner H.Z. Huang E.W. Hughes T.J. Humanic G. Igo A. Iordanova P. Jacobs W.W. Jacobs P. Jakl F. Jia P.G. Jones E.G. Judd S. Kabana 2 K. Kang J. Kapitan M. Kaplan D. Keane A. Kechechyan D. Kettler V.Yu. Khodyrev B.C. Kim J. Kiryluk A. Kisiel E.M. Kislov S.R. Klein A.G. Knospe A. Kocoloski D.D. Koetke T. Kollegger M. Kopytine L. Kotchenda V. Kouchpil K.L. Kowalik P. Kravtsov V.I. Kravtsov K. Krueger C. Kuhn 1 A.I. Kulikov A. Kumar P. Kurnadi A.A. Kuznetsov M.A.C. Lamont J.M. Landgraf S. Lange S. Lapointe F. Laue J. Lauret A. Lebedev R. Lednicky C.-H. Lee S. Lehocka M.J. Levine C. Li Q. Li Y. Li G. Lin X. Lin S.J. Lindenbaum M.A. Lisa F. Liu Hong Liu J. Liu L. Liu T. Ljubicic W.J. Llope R.S. Longacre W.A. Love Y. Lu T. Ludlam D. Lynn G.L. Ma J.G. Ma Y.G. Ma D.P. Mahapatra R. Majka L.K. Mangotra R. Manweiler S. Margetis C. Markert Lilian Martin 2 H.S. Matis Yu.A. Matulenko C.J. Mcclain T.S. Mcshane Yu. Melnick A. Meschanin J. Millane M.L. Miller N.G. Minaev S. Mioduszewski C. Mironov A. Mischke J. Mitchell B. Mohanty D.A. Morozov M.G. Munhoz B.K. Nandi C. Nattrass T.K. Nayak J.M. Nelson C. Nepali P.K. Netrakanti L.V. Nogach S.B. Nurushev G. Odyniec A. Ogawa V. Okorokov M. Oldenburg D. Olson M. Pachr S.K. Pal Y. Panebratsev A.I. Pavlinov T. Pawlak T. Peitzmann V. Perevoztchikov C. Perkins W. Peryt S.C. Phatak M. Planinic J. Pluta N. Poljak N. Porile A.M. Poskanzer M. Potekhin E. Potrebenikova B.V.K.S. Potukuchi D. Prindle C. Pruneau J. Putschke I.A. Qattan R. Raniwala S. Raniwala R.L. Ray D. Relyea A. Ridiger H.G. Ritter J.B. Roberts O.V. Rogachevskiy J.L. Romero A. Rose C. Roy 2 L. Ruan M.J. Russcher R. Sahoo I. Sakrejda T. Sakuma S. Salur J. Sandweiss M. Sarsour P.S. Sazhin J. Schambach R.P. Scharenberg N. Schmitz J. Seger I. Selyuzhenkov P. Seyboth Alexandre Shabetai 1 E. Shahaliev M. Shao M. Sharma W.Q. Shen S.S. Shimanskiy E.P. Sichtermann F. Simon R.N. Singaraju N. Smirnov R. Snellings P. Sorensen J. Sowinski J. Speltz 1 H.M. Spinka B. Srivastava A. Stadnik T.D.S. Stanislaus D. Staszak R. Stock M. Strikhanov B. Stringfellow A.A.P. Suaide M.C. Suarez N.L. Subba M. Sumbera X.M. Sun Z. Sun B. Surrow T.J.M. Symons A. Szanto de Toledo J. Takahashi A.H. Tang T. Tarnowsky J.H. Thomas A.R. Timmins S. Timoshenko M. Tokarev T.A. Trainor S. Trentalange R.E. Tribble O.D. Tsai J. Ulery T. Ullrich D.G. Underwood G. Van N. van der Kolk M. van Leeuwen A.M. Vander Molen R. Varma I.M. Vasilevski A.N. Vasiliev R. Vernet 1 S.E. Vigdor Y.P. Viyogi S. Vokal S.A. Voloshin W.T. Waggoner F. Wang G. Wang J.S. Wang X.L. Wang Y. Wang J.W. Watson J.C. Webb G.D. Westfall A. Wetzler C. Whitten H. Wieman S.W. Wissink R. Witt J. Wu Y. Wu N. Xu Q.H. Xu Z. Xu P. Yepes I.-K. Yoo Q. Yue V.I. Yurevich W. Zhan H. Zhang W.M. Zhang Y. Zhang Z.P. Zhang Y. Zhao C. Zhong J. Zhou R. Zoulkarneev Y. Zoulkarneeva A.N. Zubarev J.X. Zuo
Abstract : We present first measurements of the $\phi$-meson elliptic flow ($v_{2}(p_{T})$) and high statistics $p_{T}$ distributions for different centralities from $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions at RHIC. In minimum bias collisions the $v_{2}$ of the $\phi$ meson is consistent with the trend observed for mesons. The ratio of the yields of the $\Omega$ to those of the $\phi$ as a function of transverse momentum is consistent with a model based on the recombination of thermal $s$ quarks up to $p_{T}\sim 4$ GeV/$c$, but disagrees at higher momenta. The nuclear modification factor ($R_{CP}$) of $\phi$ follows the trend observed in the $K^{0}_{S}$ mesons rather than in $\Lambda$ baryons, supporting baryon-meson scaling. Since $\phi$-mesons are made via coalescence of seemingly thermalized $s$ quarks in central Au+Au collisions, the observations imply hot and dense matter with partonic collectivity has been formed at RHIC.
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Submitted on : Thursday, March 22, 2007 - 2:22:57 PM
Last modification on : Thursday, August 6, 2020 - 6:23:56 PM

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B.I. Abelev, M.M. Aggarwal, Z. Ahammed, B.D. Anderson, D. Arkhipkin, et al.. Partonic flow and $\phi$-meson production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. Physical Review Letters, American Physical Society, 2007, 99, pp.112301. ⟨10.1103/PhysRevLett.99.112301⟩. ⟨in2p3-00137889⟩

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