Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV

Details Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV

2003-05-16

arxiv.org/abs/nucl-ex/0305013v2

Phys.Rev.Lett.91:182301,2003

Physics

Nuclear Physics

Nuclear Experiment

325 authors, 6 pages text, RevTeX, 3 figures, 0 tables. This version accepted for publication in Phys. Rev. Lett. after minor

Scientific paper

10.1103/PhysRevLett.91.182301

The anisotropy parameter v_2, the second harmonic of the azimuthal particles distribution, has been measured with the PHENIX detector in Au+Au collisions at sqrt(s_NN) = 200 GeV for identified and inclusive charged particles at central rapidities (|eta| < 0.35) with respect to the reaction plane defined at high rapidities (|eta| = 3-4). The v_2 for all particles reaches a maximum at mid-centrality, and increases with p_T up to 2 GeV/c and then saturates or decreases slightly. Our results depart from hydrodynamically predicted behavior above 2 GeV/c. A quark coalescence model is also investigated.

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