Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single photon production in ppBar collision in the collinear and
  kt-factorisation framework and investigation of their differences   The cross section of the single photon in ppBar collision is calculated.
There are many subprocesses, for example the LO and NLO collisions, leading to
the single photon. The LO collisions, the one of which (Compton scattering) is
strongly dependent on the gluon distribution function, are investigated. Both
the off-shell (k_t dependent) and on-shell partons are considered in the
diffusions, and their differences are discussed. The unintegrated parton
distribution functions (UPDFs), used for the off-shell partons, are calculated
by the Martin-Ryskin-Watt (MRW) method. In the case of the on-shell partons,
the integrated parton distribution functions (PDFs), are obtained by MMHT 2014
LO PDFs which are determined experimentally. To investigate the accuracy of the
theoretical results, they are compared with the experimental data that are
taken by the D{\O} and CDF collaborations at Fermilab Tevatron.

1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas