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

Joseph Adams, Madan M. Aggarwal,Zubayer Ahammed,J. Amonett,B. D. Anderson,D. Arkhipkin,G. S. Averichev,S. K. Badyal, Y. Bai,J. Balewski,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,Jaroslav Bielcik,Jana Bielcikova,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, J. Fedorisin, K. Filimonov, P. Filip, E. Finch, Y. Fisyak, K. Fomenko,J. Fu,C. A. Gagliardi,L. Gaillard,J. Gans,M. S. Ganti,L. Gaudichet, F. Guerts,V. Ghazikhanian,Premomoy Ghosh,J. E. Gonzalez, O. A. Grachov,D. Grosnick,S. M. Guertin,Y. Guo, Anik Gupta,T. D. Gutierrez,T. J. Hallman,A. Hamed, D. Hardtke, J. W. Harris,M. Heinz,T. W. Henry,Boris Hippolyte, A. S. Hirsch, E. Hjort,Gerald W Hoffmann,H. Z. Huang,Shengli Huang, E. W. Hughes,T. J. Humanic, G. Igo,A. Ishihara,P. M. Jacobs

Physical Review C（2005）

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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 root s(NN) = 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. Different anisotropic flow analysis methods are compared and nonflow effects are extracted from the data. For v(2), scaling with the number of constituent quarks and parton coalescence are discussed. For v(4), scaling with v(2)(2) and quark coalescence are discussed.

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