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Dependence of hadron spectra on decoupling temperature and resonance contributions

K. J. Eskola·H. Niemi·P. V. Ruuskanen·S. S. Räsänen
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Abstract

Using equilibrium hydrodynamics with initial conditions for the energy and net baryon number densities from the perturbative QCD + saturation model, a good simultaneous description of the measured pion, kaon and (anti)proton spectra in central Au+Au collisions at $\sqrt s=130 A$GeV is found with a single decoupling temperature $\Tdec=150...160$ MeV. The interplay between the resonance content of the EoS and the development of the transverse flow leads to inverse slopes and $ $ of hadrons which increase with decreasing $\Tdec$. The origin of this result is discussed.

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K. J. Eskola, H. Niemi, P. V. Ruuskanen, S. S. Räsänen. 2002-12-13. Dependence of hadron spectra on decoupling temperature and resonance contributions. https://doi.org/10.1016/s0370-2693(03)00839-6

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