Impact parameter dependencies in Pb(160 AGeV)+Pb reactions -- hydrodynamical vs. cascade calculations
J. Brachmann, M. Reiter, M. Bleicher, A. Dumitru, J. A. Maruhn, H. Stöcker, W. Greiner
Abstract
We investigate the impact parameter dependence of the specific entropy S/A in relativistic heavy ion collisions. Especially the anti-Lambda/anti-proton ratio is found to be a useful tool to distinguish between chemical equilibrium assumptions assumed in hydrodynamics (here: the 3-fluid model) and the chemical non-equilibrium scenario like in microscopic models as the UrQMD model.
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