München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Heavy-Ion Collisions and QCD Phases V

HK 26.6: Vortrag

Dienstag, 19. März 2019, 18:00–18:15, HS 15

Electrons from semi-leptonic decays of heavy-flavour hadron at mid-rapidity in pp collisions at √s = 5.02 TeV with ALICE — •Michael Ciupek for the ALICE collaboration — University, Heidelberg, Germany

Hadrons containing charm or beauty quarks are a unique probe to study the properties of the Quark-Gluon Plasma (QGP) created in heavy-ion collisions. Because of their large masses they are produced via initial hard partonic scattering processes and therefore witness the full evolution of the hot and dense QGP medium.
Measurements of heavy-flavour hadrons produced in proton-proton collisions provide a reference for the measurements in heavy-ion collisions and are also an important test for perturbative Quantum Chromo Dynamics calculations.
The measurement of electrons from semi-leptonic decays of heavy-flavour hadrons require a precise knowledge of electrons coming from non heavy-flavour sources.Therefore the main contribution of the background is removed by tagging electrons from Dalitz decays of neutral mesons and from photon conversions.
In this talk the production cross section of electrons from heavy-flavour hadron decays at mid-rapidity in proton-proton collisions at √s = 5.02 TeV with ALICE at the LHC will be shown.