Impact parameter dependencies in Pb(160 AGeV)+Pb reactions -- hydrodynamical vs. cascade calculations

A. Dumitru; H. St\"ocker; J.A. Maruhn; J. Brachmann; M. Bleicher; M. Reiter; W. Greiner

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Impact parameter dependencies in Pb(160 AGeV)+Pb reactions -- hydrodynamical vs. cascade calculations

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arxiv nucl-th/9901057 v1 pith:GOTJNET3 submitted 1999-01-20 nucl-th

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. St\"ocker , W. Greiner This is my paper

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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.

Impact parameter dependencies in Pb(160 AGeV)+Pb reactions -- hydrodynamical vs. cascade calculations

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