Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Studies of charm quark diffusion inside jets using PbPb and pp
  collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV   The first study of charm quark diffusion with respect to the jet axis in
heavy ion collisions is presented. The measurement is performed using jets with
$p_\mathrm{T}^\mathrm{jet}$ $>$ 60 GeV and D$^0$ mesons with
$p_\mathrm{T}^\mathrm{D}$ $>$ 4 GeV in lead-lead (PbPb) and proton-proton (pp)
collisions at a nucleon-nucleon center-of-mass energy of $\sqrt{s_\mathrm{NN}}
=$ 5.02 TeV, recorded by the CMS detector at the LHC. The radial distribution
of D$^0$ mesons with respect to the jet axis is sensitive to the production
mechanisms of the meson, as well as to the energy loss and diffusion processes
undergone by its parent parton inside the strongly interacting medium produced
in PbPb collisions. When compared to Monte Carlo event generators, the radial
distribution in pp collisions is found to be well-described by PYTHIA, while
the slope of the distribution predicted by SHERPA is steeper than that of the
data. In PbPb collisions, compared to the pp results, the D$^0$ meson
distribution for 4 $<$ $p_\mathrm{T}^\mathrm{D}$ $<$ 20 GeV hints at a larger
distance on average with respect to the jet axis, reflecting a diffusion of
charm quarks in the medium created in heavy ion collisions. At higher
$p_\mathrm{T}^\mathrm{D}$, the PbPb and pp radial distributions are found to be
similar.

26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc