Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 6: Heavy-Ion Collisions and QCD Phases I
HK 6.4: Talk
Monday, March 16, 2026, 17:15–17:30, PHIL C 601
Exploring charm and beauty hadronisation, collectivity, and final-state interactions at the LHC with ALICE — •Biao Zhang for the ALICE Germany collaboration — Physikalisches Institut Im Neuenheimer Feld 226 69120 Heidelberg Germany
Beauty and charm quarks, produced in initinal hard scatterings, offer a effective probe to test perturbative QCD (pQCD). We present the first ALICE measurement of B-meson production in pp collisions at √s=13.6 TeV, providing new constraints on pQCD calculations and beauty-quark fragmentation. Charm hadronisation shows striking deviations from universal fragmentation expectations, with charm baryon production posing a persistent puzzle for QCD-based models. In this context, measuring higher-mass excited charm-baryon states provides essential insight into the mechanisms that govern baryon formation. We report the first ALICE reconstruction of excited Ξc0 states via the D0Λ decay channel, enabled by the large Run 3 pp dataset. This new reconstruction strategy offers enhanced sensitivity to the non-universal nature of charm-quark hadronisation.
Charm-quark collectivity is studied via the first D0 elliptic-flow measurement in O–O collisions, bridging pp and Pb–Pb systems and constraining heavy-quark transport coefficients.
Finally, new analyses of correlations between Λc+ and D+ with protons in pp collisions at √s = 13.6 TeV, using the large-statistics Run 3 dataset, will also be presented. These measurements open a new avenue for exploring charm*hadron interactions and their role in the formation of charm-bearing bound states.
Keywords: Heavy flavor; Collectivity; Strong interactions