Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Baryonic contributions to e+e- yields in a hydrodynamic model of Pb+Au
  collisions at the SPS   We analyze e+e- yields from matter containing baryons in addition to mesons
using a hydrodynamic approach to describe Pb+Au collisions at 158 A GeV/c. We
use two distinctly different e+e- production rates to provide contrast.
Although the presence of baryons leads to significant enhancement of e+e-
emission relative to that from mesons-only matter, the calculated results fall
below the data in the range 400 < M/MeV < 600. The calculated results are,
however, only 1.3-1.5 standard deviations below the data, which may not be
statistically significant.

23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex