Azimuthal Anisotropy Of K-S(0) And Lambda+(Lambda)Over-Bar Production At Midrapidity From Au Plus Au Collisions At Root S(Nn)=130 Gev

C. Adler, Z. Ahammed,C. Allgower,J. Amonett,B. Anderson,M. Anderson,G. Averichev,J. Balewski,O. Barannikova,L. Barnby,J. Baudot,S. Bekele,V. Belaga, R. Bellwied,J. Berger,H. Bichsel,A. Billmeier,L. Bland,C. Blyth,B. Bonner, A. Boucham,A. Brandin,A. Bravar,R. Cadman, H. Caines,M. Calderón de la Barca Sánchez,A. Cardenas,J. Carroll,J. Castillo,M. Castro, D. Cebra,P. Chaloupka,S. Chattopadhyay,Y. Chen,S. Chernenko,M. Cherney, A. Chikanian, B. Choi,W. Christie,J. Coffin,T. Cormier,J. Cramer,H. Crawford,W. Deng,A. Derevschikov,L. Didenko,T. Dietel,J. Draper,V. Dunin,J. Dunlop,V. Eckardt,L. Efimov,V. Emelianov,J. Engelage, G. Eppley,B. Erazmus,P. Fachini,V. Faine,K. Filimonov,E. Finch,Y. Fisyak,D. Flierl,K. Foley,J. Fu,C. Gagliardi,N. Gagunashvili,J. Gans,L. Gaudichet,M. Germain,F. Geurts,V. Ghazikhanian,O. Grachov,V. Grigoriev,M. Guedon,E. Gushin,T. Hallman,D. Hardtke,J. Harris,T. Henry,S. Heppelmann,T. Herston, B. Hippolyte, A. Hirsch, E. Hjort,G. Hoffmann,M. Horsley,H. Huang,T. Humanic,G. Igo,A. Ishihara,Yu. Ivanshin,P. Jacobs,W. Jacobs,M. Janik,I. Johnson,P. Jones,E. Judd,M. Kaneta,M. Kaplan,D. Keane,J. Kiryluk,A. Kisiel,J. Klay,S. Klein,A. Klyachko,A. Konstantinov,M. Kopytine,L. Kotchenda,A. Kovalenko,M. Kramer,P. Kravtsov, K. Krueger,C. Kuhn, A. Kulikov,G. Kunde,C. Kunz,R. Kutuev,A. Kuznetsov,L. Lakehal-Ayat,M. Lamont,J. Landgraf,S. Lange,C. Lansdell,B. Lasiuk,F. Laue,A. Lebedev,R. Lednický,V. Leontiev,M. LeVine,Q. Li, S. Lindenbaum,M. Lisa, F. Liu,L. Liu,Z. Liu,Q. Liu,T. Ljubicic,W. Llope,G. LoCurto,H. Long,R. Longacre,M. Lopez-Noriega,W. Love,T. Ludlam, D. Lynn,J. Ma,R. Majka,S. Margetis, C. Markert,L. Martin,J. Marx,H. Matis,Yu. Matulenko,T. McShane,F. Meissner,Yu. Melnick, A. Meschanin, M. Messer,M. Miller,Z. Milosevich,N. Minaev,J. Mitchell,V. Moiseenko,C. Moore,V. Morozov,M. de Moura,M. Munhoz,J. Nelson, P. Nevski, V. Nikitin,L. Nogach,B. Norman,S. Nurushev,G. Odyniec,A. Ogawa,V. Okorokov,M. Oldenburg, D. Olson,G. Paic,S. Pandey,Y. Panebratsev, S. Panitkin,A. Pavlinov,T. Pawlak,V. Perevoztchikov, W. Peryt,V. Petrov,M. Planinic, J. Pluta,N. Porile,J. Porter,A. Poskanzer,E. Potrebenikova,D. Prindle,C. Pruneau, J. Putschke,G. Rai, G. Rakness,O. Ravel,R. Ray,S. Razin,D. Reichhold,J. Reid,F. Retiere,A. Ridiger,H. Ritter,J. Roberts,O. Rogachevski, J. Romero, A. Rose, C. Roy,V. Rykov,I. Sakrejda, S. Salur,J. Sandweiss,A. Saulys, I. Savin,J. Schambach,R. Scharenberg,N. Schmitz,L. Schroeder,A. Schüttauf,K. Schweda,J. Seger,D. Seliverstov,P. Seyboth,E. Shahaliev,K. Shestermanov,S. Shimanskii,V. Shvetcov,G. Skoro, N. Smirnov,R. Snellings,P. Sorensen, J. Sowinski,H. Spinka, B. Srivastava,E. Stephenson,R. Stock,A. Stolpovsky,M. Strikhanov,B. Stringfellow,C. Struck,A. Suaide, E. Sugarbaker, C. Suire,M. Šumbera,B. Surrow,T. Symons,A. Szanto de Toledo,P. Szarwas,A. Tai,J. Takahashi,A. Tang,J. Thomas, M. Thompson,V. Tikhomirov,M. Tokarev,M. Tonjes,T. Trainor,S. Trentalange,R. Tribble, V. Trofimov,O. Tsai,T. Ullrich,D. Underwood,G. Van Buren,A. VanderMolen,I. Vasilevski,A. Vasiliev,S. Vigdor,S. Voloshin, F. Wang,H. Ward,J. Watson,R. Wells,G. Westfall,C. Whitten,H. Wieman,R. Willson,S. Wissink,R. Witt,J. Wood,N. Xu,Z. Xu,A. Yakutin,E. Yamamoto,J. Yang,P. Yepes,V. Yurevich,Y. Zanevski,I. Zborovský,H. Zhang, W. Zhang,R. Zoulkarneev,A. Zubarev

PHYSICAL REVIEW LETTERS（2002）

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摘要

We report STAR results on the azimuthal anisotropy parameter v(2) for strange particles K-S(0), Lambda, and (Lambda) over bar at midrapidity in Au+Au collisions at roots(NN)=130 GeV at the Relativistic Heavy Ion Collider. The value of v(2) as a function of transverse momentum, p(t), of the produced particle and collision centrality is presented for both particles up to p(t)similar to3.0 GeV/c. A strong p(t) dependence in v(2) is observed up to 2.0 GeV/c. The v(2) measurement is compared with hydrodynamic model calculations. The physics implications of the p(t) integrated v(2) magnitude as a function of particle mass are also discussed.

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phase transition,elliptic flow

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