Heavy-flavor correlations and multiplicity dependence in pp and p--Pb collisions with ALICE

TL;DR

This paper presents ALICE measurements of heavy-flavor correlations and multiplicity dependence in pp and p--Pb collisions at LHC energies, providing insights into QCD processes and cold nuclear matter effects.

Contribution

It offers new experimental data on D-meson correlations and yields in pp and p--Pb collisions, enhancing understanding of heavy-quark production and hadronization.

Findings

D-meson azimuthal correlations measured at 7 TeV and 5.02 TeV.

Per-event D-meson yields increase with charged-particle multiplicity.

Results inform models of cold nuclear matter effects on heavy-quark production.

Abstract

The production of heavy quarks in pp collisions at the LHC energies provides a reliable test of perturbative QCD calculations. Comparisons of pp and $\pPb$ measurements of their hadronization products allow us to investigate how cold nuclear matter effects affect the heavy-quark production. We present ALICE measurements of azimuthal correlations of prompt D mesons with charged hadrons in pp collisions at $\s$ = 7 TeV and $\pPb$ collisions at $\sNN$ = 5.02 TeV. We also show the per-event D-meson yields as a function of the charged-particle multiplicity in pp collisions at $\s$ = 7 TeV.