Pion abundance and entropy in the hydrodynamical description of relativistic nuclear collisions

Details Pion abundance and entropy in the hydrodynamical description of relativistic nuclear collisions Pion abundance and entropy in the hydrodynamical description of relativistic nuclear collisions

2000-01-06

arxiv.org/abs/nucl-th/0001010v1

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 eps figures, RevTex

Scientific paper

We show that a hydrodynamical model with continuous particle emission instead of sudden freeze out can explain both the strange particle abundances and pion abundance from NA35 without extra assumption (e.g., sequential freeze out, modified equation of state, sudden plasma hadronization,...). In this scenario, the observation of a larger pion abundance is natural and does not imply a higher initial entropy and early plasma phase.

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