Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Double parton scattering: a study of the effective cross section within
  a Light-Front quark model   We present a calculation of the effective cross section $\sigma_{eff}$, an
important ingredient in the description of double parton scattering in
proton-proton collisions. Our theoretical approach makes use of a Light-Front
quark model as framework to calculate the double parton distribution functions
at low-resolution scale. QCD evolution is implemented to reach the experimental
scale. The obtained $\sigma_{eff}$, when averaged over the longitudinal
momentum fractions of the interacting partons, $x_i$, is consistent with the
present experimental scenario. However the result of the complete calculation
shows a dependence of $\sigma_{eff}$ on $x_i$, a feature not easily seen in the
available data, probably because of their low accuracy. Measurements of
$\sigma_{eff}$ in restricted $x_i$ regions are addressed to obtain indications
on double parton correlations, a novel and interesting aspect of the three
dimensional structure of the nucleon.

8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg