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Transverse spectra of hadrons at RHIC

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

We present results on spectra of pions, kaons and (anti)protons from a study of heavy ion collisions using the perturbative QCD + saturation model to calculate the production of initial (transverse) energy and baryon number followed by a hydrodynamic description of the expansion of produced matter. In particular, we study how the hadron spectra and multiplicities depend on the decoupling temperature $\Tdec$ when the low temperature phase contains all hadrons and and hadron resonances with mass below 2 GeV. We show that the spectra and multiplicities of pions, kaons and (anti)protons measured at RHIC in central Au+Au collisions with $\sqrt s=130$ GeV can be obtained with a single decoupling temperature 150$...$160 MeV, common for both the chemical and the kinetic freeze-out.

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K. J. Eskola, H. Niemi, P. V. Ruuskanen, S. S. Rasanen. 2002-10-02. Transverse spectra of hadrons at RHIC. https://doi.org/10.1016/s0375-9474(02)01521-x

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