Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exclusive J/psi production in pp and ppbar collisions and the QCD
  odderon   We briefly present the QCD based calculation of exclusive J/psi production
via pomeron-odderon fusion in proton-antiproton collisions. For the Tevatron
energy the differential cross section dsigma/dy(y=0) is estimated to be around
1 nb.

32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex