Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2002-10-02
Nucl.Phys. A715 (2003) 561-564
Physics
Nuclear Physics
Nuclear Theory
4 pages, 2 eps-figures, talk at Quark Matter '02, Nantes, France, July 2002
Scientific paper
10.1016/S0375-9474(02)01521-X
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.
Eskola Kari. J.
Niemi Harri
Räsänen S. S.
Ruuskanen P. V.
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