Reconstruction of Hadronization Stage in Pb+Pb Collisions at 158A GeV/c

Details Reconstruction of Hadronization Stage in Pb+Pb Collisions at 158A GeV/c Reconstruction of Hadronization Stage in Pb+Pb Collisions at 158A GeV/c

2001-11-16

arxiv.org/abs/nucl-th/0111050v4

Nucl.Phys. A710 (2002) 439-465

Physics

Nuclear Physics

Nuclear Theory

21 pages including 3 figures, RevTex, semi-relativistic solution of hydrodynamics was used, submitted to Nucl. Phys. A

Scientific paper

10.1016/S0375-9474(02)01165-X

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.

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