Particle Freeze-out within the Self-Consistent Hydrodynamics

Details Particle Freeze-out within the Self-Consistent Hydrodynamics Particle Freeze-out within the Self-Consistent Hydrodynamics

2009-02-03

arxiv.org/abs/0902.0545v1

Acta Phys.Polon.B40:1045-1052,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, talk given at the IV International Workshop on Particle Correlations and Femtoscopy, Cracow, September 11-14, 2008

Scientific paper

Here I discuss some implicit assumptions of modern hydrodynamic models and argue that their accuracy cannot be better than 10-15 %. Then I formulate the correct conservation laws for the fluid emitting particles from an arbitrary freeze-out (FO) hypersurface (HS) and show that the derived momentum distribution function of emitted particles does not contain negative contributions which appear in the famous Cooper-Frye formula. Further I analyze the typical pitfalls of some hydro models trying to alternatively resolve the FO problem.

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