Mainz 2022 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 12: Heavy-Ion Collisions and QCD Phases III

HK 12.3: Vortrag

Montag, 28. März 2022, 16:45–17:00, HK-H1

Reconstruction of beauty jets in proton-proton collisions at √s=13 TeV with ALICE — •Katharina Demmich — Westfälische Wilhelms-Universität Münster, Germany

In this contribution, the performance of a beauty-jet tagging algorithm based on transverse impact-parameter threshold cuts will be discussed for data collected by the ALICE experiment in proton-proton collisions at √s=13 TeV. Owing to the relatively large lifetimes and the cascade of weak decays of beauty hadrons, the measurement of the impact parameter of tracks within jets can be utilised to select beauty jets.

Measuring the beauty-jet production cross section in proton-proton collisions is a fundamental step towards a thorough testing of QCD calculations for the production and fragmentation of heavy flavours in nucleon-nucleon collisions. Thereby, the ALICE experiment offers excellent capabilities to assess theory predictions down to low p_T,Jet due to its unique tracking performance.
In addition, the investigation of beauty-jet observables in proton-proton collisions is a reference for respective analyses on heavy-ion collisions. As such, it opens the possibility to study the mass dependence of particle interactions with the Quark-Gluon Plasma (QGP).