Azimuthal anisotropy in Au+Au collisions at sqrt sNN = 200 GeV

Joseph Adams,Madan M. Aggarwal,Zubayer Ahammed,J. Amonett,B. D. Anderson,D. Akhipkin,G. S. Averichev,S. K. Badyal,Y. Bai,J. Balewski,O. Barannikova,Lee Stuart Barnby,J. Baudot,S. Bekele,V. V. Belaga,Rene Bellwied,Joram Berger,B. I. Bezverkhny,S. Bharadwaj,Anju Bhasin,A. K. Bhati,V. S. Bhatia,H. Bichsel,A. Billmeier,L. C. Bland,C. O. Blyth,B. E. Bonner,M. Botje,A. Boucham,A. V. Brandin,A. Bravar,M. Bystersky,R. V. Cadman,X. Z. Cai,H. Caines,M. Calderon De La Barca Sanchez,J. B. Carroll,J. Castillo,D. Cebra,Z. Chajecki,P. Chaloupka,S. Chattopdhyay,H. F. Chen,Yu Chen,J. Cheng,M. Cherney,A. Chikanian,W. Christie,J. P. Coffin,Thomas Michael Cormier,J. G. Cramer,H. J. Crawford,Debasish Das,S. K. Das,M. M. de Moura,A. A. Derevschikov,L. Didenko,Thomas Dietel,S. M. Dogra,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,W. R. Edwards,L. G. Efimov,V. Emelianov,J. Engelage,G. Eppley,B. Erazmus,M. Estienne,P. Fachini,Julien Faivre,R. Fatemi,J. Fedorisin,K. Filimonov,P. Filip,E. Finch,V. Fine,Y. Fisyak,K. J. Foley,K. Fomenko,J. Fu,C. A. Gagliardi,J. Gans, Ganti,L. Gaudichet,Frank Jm Geurts,V. Ghazikhanian,Premomoy Ghosh,J. E. Gonzalez,O. A. Grachov,O. G. Grebenyuk,D. Grosnick,S. M. Guertin,Y. Guo

Lawrence Berkeley National Laboratory（2004）

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摘要

The results from the STAR Collaboration on directed flow (v_1), elliptic flow (v_2), and the fourth harmonic (v_4) in the anisotropic azimuthal distribution of particles from Au+Au collisions at sqrtsNN = 200 GeV are summarized and compared with results from other experiments and theoretical models. Results for identified particles are presented and fit with a Blast Wave model. For v_2, scaling with the number of constituent quarks and parton coalescence is discussed. For v_4, scaling with v_22 and quark coalescence predictions for higher harmonic flow is discussed. The different anisotropic flow analysis methods are compared and nonflow effects are extracted from the data.

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关键词

azimuthal anisotropy,au+au,sqrt snn

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