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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Heavy-Ion Collisions and QCD Phases I

HK 8.3: Vortrag

Montag, 11. März 2024, 17:30–17:45, HBR 62: EG 03

Reconstruction of heavy-flavor hadrons with ALICE in Run 3 — •Phil Lennart Stahlhut for the ALICE Germany collaboration — Physikalisches Institut, Universität Heidelberg

Heavy-flavor hadrons are sensitive probes for the quark-gluon plasma, a hot nuclear matter state produced at extremely high temperatures and/or densities, like the ones reached in heavy-ion collisions at the CERN LHC. Therefore, measurements of heavy-flavor hadron production in proton-proton collisions are a crucial reference for production measurements in heavy-ion collisions, while also providing an important test of perturbative quantum chromodynamics.

The reconstruction of short-lived particles and their corresponding decay vertices can be performed with the Kalman Filter Particle package. It provides a full description of the decay particle both at its production and decay vertex and includes the complete treatment of tracking and vertexing uncertainties. Moreover, the KF Particle package supports the use of geometrical, mass and topological constraints in the reconstruction process and is suitable even for high-density track environments.

This contribution will outline recent developments of the reconstruction and selection workflow of heavy-flavor hadrons in O²Physics, the new analysis software framework for ALICE in Run 3, and selected results from proton-proton collisions.

Keywords: Heavy-flavor hadrons; ALICE; LHC Run 3; KF Particle package