Production and ratios of heavy hadrons from large to small collision systems with a coalescence plus fragmentation approach

The Λc/D0 ratio observed in AA collision at RHIC and LHC energies has a value of the order of the unity. The recent experimental measurements in pp collisions have shown a ratio of Λc/D0∼0.6 , about one order of magnitude larger than that measured in e+e− , ep collisions. We study the hadronization after the propagation of charm quarks in the quark-gluon plasma (QGP). The propagation is described by means of a relativistic Boltzmann transport approach where the non-perturbative interaction between heavy quarks and light quarks is described by means of a quasi-particle approach. Using a coalescence plus fragmentation model for the hadronization we found in heavy-ion collision a large Λc production resulting in a baryon over meson ratio of order O(1) . Furthermore we present results for these ratios in pp collisions at top LHC energies assuming the formation of an hot QCD matter at finite temperature. We calculate the heavy baryon/meson ratio and the pT spectra of charmed hadrons with and without strangeness content: D0 , Ds , Λc , Σc and the recently measured Ξc baryon, finding an enhancement in comparison with the ratio observed for e+e− , ep collisions; moreover with this approach we predict also a significant production of Ωc respect to D0 .