Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phenomenological implications of the intrinsic charm in the $Z$ boson
  production at the LHC   In this paper we study the $Z$, $Z+$ jet, $Z+c$ and $Z+c+$ jet production in
$pp$ collisions at the LHC considering different models for an intrinsic charm
content of the proton. We analyse the impact of the intrinsic charm in the
rapidity and transverse momentum distributions for these different processes.
Our results indicated that differently from the other processes, the $Z+c$
cross section is strongly affected by the presence of the intrinsic charm.
Moreover, we propose the analysis of the ratios $R(Z+c/Z) \equiv
\sigma(Z+c)/\sigma(Z)$ and $R(Z+c/Z+\mbox{jet}) \equiv
\sigma(Z+c)/\sigma(Z+\mbox{jet})$ and demonstrate that these observables can be
used as a probe of the intrinsic charm.

31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ