Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reconstruction of Hadronization Stage in Pb+Pb Collisions at 158A GeV/c   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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The categories of this paper are: math
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
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The categories of this paper are: physics
7
The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an