Speaker
Description
Heavy quarks (charm and beauty) have masses much larger than the characteristic energy
scale of QCD interaction. Due to this they are typically produced in hard scattering processes
with large Q2 and thus offer a unique perspective to study the transition from quark to
hadrons in all collision systems. The latest measurements of charm meson and baryon
production in pp collisions allowed the first measurement of the total charm production cross
section including the contribution of all ground-state charm hadrons and the first
measurement of the fragmentation fractions of charm in hadrons in pp collisions. The
measurement of the charm baryon-to-meson yield ratios show a significant increase with
respect to the measurements performed in e+e− and ep collisions, which suggests that the
fragmentation of charm is not universal across different collision systems. Thus, precise
measurements of charm baryon and meson production are crucial to study the charm quark
hadronization in a partonic rich environment like the one produced in pp collisions at the
LHC energies. In this contribution, the recent measurements of charm meson and baryon
production in pp collisions will be shown. Also the comparison with the models to better
understand the charm quark hadronization will be presented.
