Speaker
Description
Measurements of the production of heavy-flavour hadrons in proton-proton collisions
provide the baseline for the observations of hot-medium effects in heavy-ion collisions,
as well as tests of perturbative QCD calculations. Moreover, measurement of charm-
hadron production in hadronic collision systems allow investigating the charm-quark
hadronization mechanisms.
Measurements based on event shape observables allow isolating events according to
their topologies, dominated by soft and hard processes. They provide information about
the energy distribution in an event and provide tools to study the perturbative as well as
non-perturbative aspects of the QCD. The event shape observables permit to isolate
jetty-like (high-p T jets) and isotropic (partonic scattering with low Q 2 ) events.
In this contribution, recent results on open-charm meson production measured by the
ALICE Collaboration in pp collisions at √s = 13 TeV from the Run 2 of the LHC will be
presented. Measurements of the averaged self-normalized yield as a function of
transverse spherocity (S_{0} ) at midrapidity for D ∗+ + , D + and D 0 mesons will be shown. The
self-normalized yield will be calculated in different multiplicity, transverse spherocity
and p T intervals. In addition, comparison with measurements performed at √s = 7 TeV
will be shown and comparison with models will be discussed.
