Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Double parton scattering theory overview   The dynamics of double hard scattering in proton-proton collisions is quite
involved compared with the familiar case of single hard scattering. In this
contribution, we review our theoretical understanding of double hard scattering
and of its interplay with other reaction mechanisms.

18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph