Reconstruction of Hadronization Stage in Pb+Pb Collisions at 158A GeV/c
Abstract
Recent data on hadron multiplicities in central Pb+Pb collisions at 158A GeV/c at mid-rapidity are analyzed within the concept of chemical freeze-out. A non-uniformity of the baryon chemical potential along the beam axis is taken into account. An approximate analytical solution of the hydrodynamic equations for a chemically frozen Boltzmann-like gas is found. The Cauchy conditions for hydrodynamic evolution of the hadron resonance gas are fixed at the thermal freeze-out hypersurface from analysis of one-particle momentum spectra and HBT correlations. The proper time of chemical freeze-out and physical conditions at the hadronization stage, such as energy density and averaged transverse velocity, are found.
Keywords
Cite
@article{arxiv.nucl-th/0111050,
title = {Reconstruction of Hadronization Stage in Pb+Pb Collisions at 158A GeV/c},
author = {S. V. Akkelin and P. Braun-Munzinger and Yu. M. Sinyukov},
journal= {arXiv preprint arXiv:nucl-th/0111050},
year = {2010}
}
Comments
21 pages including 3 figures, RevTex, semi-relativistic solution of hydrodynamics was used, submitted to Nucl. Phys. A