Thermal freeze-out versus chemical freeze-out reexamined

Details Thermal freeze-out versus chemical freeze-out reexamined Thermal freeze-out versus chemical freeze-out reexamined

2007-02-12

arxiv.org/abs/nucl-th/0702042v3

Acta Phys.Polon.B40: 2825-2842,2009

Physics

Nuclear Physics

Nuclear Theory

12 pages, 12 figures, a minor change of title, the final version published in Acta Physica Polonica B

Scientific paper

An alternative, to the commonly used blast-wave, model describing the freeze-out hypersurface is applied to fit the $p_{T}$-spectra of identified hadrons measured at relativistic heavy-ion collisions at $\sqrt{s_{NN}}=62.4, 130$ and 200 GeV. Decays of resonances are taken into account completely. It has turned out that the fitted freeze-out temperature and baryon number chemical potential depend weakly on the centrality of the collision and their values are close to the chemical freeze-out values determined from fits to particle yield ratios.

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