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Flow effects on the freeze-out phase-space density in heavy ion collisions

Boris Tomasik·Ulrich Heinz
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Abstract

The strong longitudinal expansion of the reaction zone formed in relativistic heavy-ion collisions is found to significantly reduce the spatially averaged pion phase-space density, compared to naive estimates based on thermal distributions. This has important implications for data interpretation and leads to larger values for the extracted pion chemical potential at kinetic freeze-out.

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Boris Tomasik, Ulrich Heinz. 2001-11-06. Flow effects on the freeze-out phase-space density in heavy ion collisions. https://doi.org/10.1103/physrevc.65.031902

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