Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parton distribution effects in the direct photon production at hadron
  collisions   Parton distribution functions are crucial to understand the internal
kinematics of hadrons. There are currently a large number of distribution
functions on the market, and thanks to today's technology, performing
computational analysis of the differential cross-sections has become more
accessible. Despite technological advances, accurately accessing to the
internal structure of hadrons remains a difficult task from a theoretical point
of view. In this work, we analyze the impact on the differential cross-sections
when updating the sets of parton distribution and fragmentation functions, for
the production of one hadron plus a direct photon at the energy scale of RHIC
and LHC experiments.

25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ