Identified particle elliptic flow in Au + Au collisions at √sNN = 130 GeV C. Adler , Zubayer Ahammed , C. E. Allgower , J. Amonett , B. D. Anderson , Matthew J. Anderson , G. S. Averichev , J. Balewski , O. Barannikova , Lee Stuart Barnby , J. Baudot , S. Bekele , V. V. Belaga , R. Bellwied , J. Berger , H. Bichsel , L. C. Bland , C. O. Blyth , B. E. Bonner , R. Bossingham , A. Boucham , A. V. Brandin , R. V. Cadman , H. Caines , M. Calderón de la Barca Sánchez , A. Cardenas , J. Carroll , J. Castillo , M. Castro , D. Cebra , Subhasis Chattopadhyay , Mingshui Chen , Yu Chen , S. P. Chernenko , M. Cherney , A. Chikanian , B. Choi , W. Christie , J. P. Coffin , L. Conin , Thomas Michael Cormier , J. G. Cramer , H. J. Crawford , M. DeMello , W. S. Deng , A. A. Derevschikov , L. Didenko , J. E. Draper , V. B. Dunin , J. C. Dunlop , V. Eckardt , L. G. Efimov , V. Emelianov , J. Engelage , G. Eppley , B. Erazmus , P. Fachini , E. Finch , Y. Fisyak , D. Flierl , K. J. Foley , J. Fu , N.D. Gagunashvili , J. Gans , L. Gaudichet , Marie Germain , Frank Jm Geurts , V. Ghazikhanian , J. Grabski , O. A. Grachov , D.E. Greiner , V. Grigoriev , M. Guedon , E. Gushin , T. J. Hallman , D. Hardtke , J. W. Harris , M. Heffner , S. Heppelmann , T. Herston , Boris Hippolyte , A. S. Hirsch , E. Hjort , Gerald W Hoffmann , M. Horsley , H. Z. Huang , T. J. Humanic , H. Hümmler , G. Igo , A. Ishihara , Yu. Ivanshin , Peter Martin Jacobs , W. W. Jacobs , Malgorzata Anna Janik , Ian Johnson , Peter Graham Jones , E. G. Judd , Masashi Kaneta , Morton Kaplan , D. Keane Physical Review Letters（2001）
Abstract
We report first results on elliptic flow of identified particles at midrapidity in Au+Au collisions at √(sNN)= 130 GeV using the STAR TPC at RHIC. The elliptic flow as a function of transverse momentum and centrality differs significantly for particles of different masses. This dependence can be accounted for in hydrodynamic models, indicating that the system created shows a behavior consistent with collective hydrodynamical flow. The fit to the data with a simple model gives information on the temperature and flow velocities at freeze-out.
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Key words
particle elliptic flow, display=inline><mmlmi>a</mmlmi><mmlmi>u</mmlmi><mmlmo>+</mmlmo><mmlmi>a</mmlmi><mmlmi>u</mmlmi></mmlmath>collisions
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