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HK: Fachverband Physik der Hadronen und Kerne

HK 23: Heavy-Ion Collisions and QCD Phases III

HK 23.1: Gruppenbericht

Mittwoch, 18. März 2026, 13:45–14:15, PHIL C 301

Probing charm and quarkonium dynamics in pp and OO collisions with ALICE — •Samrangy Sadhu, Ankur Yadav, Lubna Al-Rifaie, and Bernhard Ketzer for the ALICE Germany collaboration — Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn

We present recent and ongoing heavy-flavour measurements with the ALICE experiment at the CERN LHC, focusing on charm production in pp and quarkonium collectivity in OO collisions. We discuss recent open-charm results, including the D^*+ production cross section in pp collisions at √s=5.36 TeV and D⁰ meson–charged particles azimuthal correlations in pp at √s=13.6 TeV. Together, these measurements constrain charm-quark production, fragmentation, and charm-jet properties, and at the same time provide essential baselines for future heavy-ion studies at the corresponding energies. In addition, we present the first J/ψ flow measurement in OO collisions at √s_NN=5.36 TeV. The observed azimuthal anisotropy offers insight into possible collective behaviour and charm transport in a small, short-lived QCD medium. These results strengthen the understanding of heavy-flavour dynamics across collision systems and support the characterisation of QCD phenomena from pp to intermediate-size nuclei. Supported by BMFTR.

Keywords: Heavy flavour; Open charm; Quarkonium; Azimuthal correlations; Flow