Charm-baryon enhancement and charm fragmentation fractions in small systems measured with ALICE

Abstract

Recent measurements of charm-baryon production at midrapidity by the ALICE collaboration show baryon-to-meson yield ratios significantly higher than those measured in ${\mathrm{e}}^{+}{\mathrm{e}}^{-}$ collisions, suggesting that the charm fragmentations are not universal across different collisions systems. Thus, measurements of charm-baryon production are crucial to study the charm quark hadronisation in proton--proton (pp) collisions. In proton--lead (p--Pb) collisions, the measurements of charm baryons provide important information about cold nuclear matter effects and help to understand how the possible presence of collective effects could modify the production of heavy-flavour hadrons. In this contribution, the most recent results on open charm-hadron production in pp and p--Pb collisions measured by ALICE are discussed.

Proceedings of the 19th International Conference on Strangeness in Quark Matter (SQM 2021), May 17 - 22, 2021. 4 pages, 3 figures

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• Charm-Baryon Production in Proton-Proton Collisions
• Triple parton scatterings in high-energy proton-proton collisions