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HK: Fachverband Physik der Hadronen und Kerne
HK 8: Heavy-Ion Collisions and QCD Phases I
HK 8.2: Vortrag
Montag, 11. März 2024, 17:15–17:30, HBR 62: EG 03
Charmed baryon measurements in proton-proton collisions at √s=13.6 TeV with the ALICE experiment in Run 3 — •Federica Zanone for the ALICE Germany collaboration — Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Germany
At LHC energies, charmed-baryons are copiously produced. Moreover, the recent upgrade of the ALICE experiment allows to operate at an increased interaction rate and in continuous readout mode, thus allowing for collecting a significantly larger data set compared to Run 2. This opens a new dimension of precise charmed-baryon measurements in several decay channels, helping to shed light on the mechanisms responsible for the production and decay of these particles. This topic became of crucial interest after recent studies by ALICE challenged the assumptions of the universality of charm hadronization processes across different collision systems. Moreover, the decay of charmed baryons is still poorly understood. Measurements of corresponding branching ratios pose a challenge to all models.
In this picture, the measurements of Ξc0 → Ξ+π− and of the Cabibbo-suppressed decays Ωc0 → Ξ+π− (SCS) and Ωc0 → Ξ+ K− (DCS) play a key role. To address these challenging analyses, ALICE relies on the implementation of dedicated triggers, thus allowing for the exploration of a data sample that is about 300 times larger than the previous data set but at the same time applying an efficient data storage procedure. We present recent results from Run 3.
Keywords: Heavy flavour; Charmed baryons; ALICE