Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2000-11-16
Phys.Rev.Lett. 86 (2001) 4783-4786
Physics
Nuclear Physics
Nuclear Theory
4 pages, 4 figures. Revised. Included discussed of v_2 (p_t) vs. b and comparison to STAR data
Scientific paper
Radial and elliptic flow in non-central heavy ion collisions can constrain the effective Equation of State(EoS) of the excited nuclear matter. To this end, a model combining relativistic hydrodynamics and a hadronic transport code(RQMD [17]) is developed. For an EoS with a first order phase transition, the model reproduces both the radial and elliptic flow data at the SPS. With the EoS fixed from SPS data, we quantify predictions at RHIC where the Quark Gluon Plasma(QGP) pressure is expected to drive additional radial and elliptic flow. Currently, the strong elliptic flow observed in the first RHIC measurements does not conclusively signal this nascent QGP pressure. Additional measurements are suggested to pin down the EoS.
Lauret Jerome
Shuryak Edward V.
Teaney Derek
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