Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Off-shell gluon production in interaction of a projectile with 2 or 3
  targets   Within the effective QCD action for the Regge kinematics amplitudes for
virtual gluon emission are studied in collision of a projectile with two and
three targets. It is demonstrated that all un- Feynman singularities cancel
between induced vertices and rescattering contributions. Formulas simplify
considerably in a special gauge which is a straightforward generalization of
the light-cone gauge for emission of real gluons.

21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess