Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Real and virtual $N\bar{N}$ pair production near the threshold   Nucleon-antinucleon optical potential, which explains the experimental data
for the processes $e^{+}e^{-}\rightarrow p\bar{p}$ and
$e^{+}e^{-}\rightarrow\mbox{pions}$ near the threshold of $p\bar{p}$ pair
production, is suggested. To obtain this potential we have used the available
experimental data for $p\bar{p}$ scattering, $p\bar{p}$ pair production in
$e^{+}e^{-}$ annihilation, and the ratio of electromagnetic form factors of a
proton in the timelike region. It turns out that final-state interaction via
the optical potential allows one to reproduce the available experimental data
with good accuracy. Our results for the cross sections of $e^{+}e^{-}\to6\pi$
process near the threshold of $p\bar{p}$ pair production are in agreement with
the recent experiments.

5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga