Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of Monte Carlo event generators for proton-proton collisions at
  LHC energies in the forward region   In this paper we present a comparative study between PYTHIA, EPOS, QGSJET,
and SIBYLL generators. The global event observables considered are the charged
energy flow, charged-particle distributions, charged-hadron production ratios
and $V^{0}$ ratios. The study is performed in the LHCb and TOTEM fiducial
phase-spaces on minimum bias simulated data samples for \emph{pp} collisions at
$\sqrt{s} = 7$ TeV using reference measurements from the aforementioned
experiments. In the majority of cases, the measurements are within a band
defined by the most extreme predictions. The observed differences between the
predictions and the measurements seem to be, in most part, caused by
extrapolation from the central pseudorapidity region ($|\eta| \leq$ 2.5), in
which the generators were mainly tuned.

33
The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int