Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Fadin-Lipatov-vertex in high-energy heavy quark and charmonium
  production   Calculations of heavy quark and charmonium hadroproduction are presented in
the k_t-factorization approach. The resulting differential cross sections are
compared to experimental values and NLO collinear predictions. The application
of the full effective Fadin-Lipatov quark-antiquark- production-vertex has an
important influence on the results and in particular leads to a strong
suppression of certain color octet contributions which are related to the
outstanding problem of the production of polarized J/Psi.

21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
18
The categories of this paper are: econ