4 research outputs found

    Directed and Elliptic Flow at RHIC

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    We present the directed flow measurement (v1v_1) from Au+Au collisions at \sqrtsNN = 62 GeV. Over the pseudorapidity range we have studied, which covers η\eta from -1.2 to 1.2 and 2.4<∣η∣<42.4 < |\eta| < 4, the magnitude of v1v_1 for charged particles is found to increase monotonously with pseudorapidity for all centralities. No ``v1v_1 wiggle'', as predicted by various theoretical models, is observed at midrapidity. Elliptic flow (v2v_2) from moderate high ptp_t particles (3−6GeV/c3-6 GeV/c) at \sqrtsNN = 200 GeV is presented as a function of impact parameter. It is found that models that are based on {\it jet quenching} alone appear to underpredict v2v_2 at moderate high ptp_t, while the model that incorporates both, recombination and fragmentation, describes the data better.Comment: 6 pages, 4 figures. Proceeding for Hot Quark 04 conference Changes in the revision are mostly English fixes. v1 versus eta plot is flipped over to follow the conventio
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