SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 46: Heavy-Ion Collisions and QCD Phases IX
HK 46.1: Gruppenbericht
Mittwoch, 22. März 2023, 17:30–18:00, SCH/A216
Open heavy-flavour hadron production from small to large collision systems at the LHC with ALICE in Run 2 and beyond — •Annalena Kalteyer for the ALICE Germany collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
This talk will present the latest measurements performed by the group for heavy-flavour baryon production at midrapidity in pp, p–Pb and Pb–Pb collisions at the LHC. Small collision systems, like pp, allow for precision measurements of rare particle species, and they can serve as a reference for heavy-ion collisions. Proton-lead collisions are in particular useful to study cold nuclear matter effects, and with Pb–Pb systems we study heavy-flavour production in heavy-ion collisions and their interaction with the quark-gluon plasma.
We will show the measurement of Λc+ down to pT=0 in pp and p–Pb collisions, together with the obtained nuclear modification factor, thanks to the recently measured Λc+ also in Pb–Pb collisions. Furthermore, due to sophisticated machine learning techniques, it was possible to gain indirect information on beauty baryon production by measuring Λc+ coming from the decay of beauty hadrons, both in pp and p–Pb collisions. Finally, results of heavy charm baryons, such as Ξc0,+ and Ωc0, will be discussed. Since data taking in Run 3 at the LHC started in July 2022, we will show a first look on Run 3 data, plus some studies on vertex determination with the KFParticle package and heavy-flavour triggers for rare particles and beauty hadrons.