SMuK 2023 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 46: Heavy-Ion Collisions and QCD Phases IX
HK 46.2: Talk
Wednesday, March 22, 2023, 18:00–18:15, SCH/A216
Ωc0 production in pp collisions at √s = 13 TeV with ALICE — •Tiantian Cheng for the ALICE Germany collaboration — Central China Normal University(CCNU), Wuhan, China — GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
Recent measurements of the production of charm hadrons at midrapidity in pp collisions at √s = 5.02 TeV showed that the baryon-to-meson yield ratios are significantly higher than those measured in e+e− collisions for different charm-baryon species. These observations suggest that the charm fragmentation fractions are not universal and depend on the collision systems. In this talk, the new measurement of the pT-differential cross section times branching ratio of the Ωc0 baryon measured in the decay channels Ωc0 → eΩν and Ωc0 → π Ω in pp collisions at √s = 13 TeV will be reported. The measurement of the Ωc0 baryon, containing 2 strange quarks, gives further constraints on charm-quark hadronisation models. The final result will be compared with theoretical calculations.