Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hadron production in elementary nucleon-nucleon reactions from low to
  ultra-relativistic energies   We study the hadron production in $p+p$, $p+n$ and $n+n$ reactions within the
microscopic Parton-Hadron-Dynamics (PHSD) transport approach in comparison to
PYTHIA 8.2. We discuss the details of the "PHSD tune" of the Lund string model
(realized by event generators FRITIOF and PYTHIA) in the vacuum (as in $N+N$
collisions) as well as its in-medium modifications relevant for heavy-ion
collisions where a hot and dense matter is produced. We compare the results of
PHSD and PYTHIA 8.2 (default version) for the excitation function of hadron
multiplicities as well as differential rapidity $y$, transverse momentum $p_T$
and $x_F$ distributions in $p+p$, $p+n$ and $n+n$ reactions with the existing
experimental data in the energy range $\sqrt{s_{NN}} = 2.7 - 7000$ GeV. We
discuss the production mechanisms of hadrons and the role of final state
interactions (FSI) due to the hadronic rescattering. We also show the influence
of the possible quark-gluon plasma (QGP) formation on hadronic observables in
$p+p$ collisions at LHC energies. We stress the importance of developing a
reliable event generator for elementary reactions from low to
ultra-relativistic energies in view of actual and upcoming heavy-ion
experiments.

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The categories of this paper are: comp-gas
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg