Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Infrared Scales and Factorization in QCD   Effective field theory methods are used to study factorization of the deep
inelastic scattering cross-section. The cross-section is shown to factor in
QCD, even though it does not factor in perturbation theory for some choices of
the infrared regulator. Messenger modes are not required in soft-collinear
effective theory for deep inelastic scattering as x -> 1.

23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph