Bochum 2018 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Poster

HK 52.10: Poster

Donnerstag, 1. März 2018, 16:30–18:45, Audimax Foyer

Separation of Heavy-Flavour Production Mechanisms via Two-Particle Angular Correlations in Proton-Proton Collisions at √s=2.76 TeV — •Katharina Garner for the ALICE collaboration — WWU Münster, Germany

In high-energy particle collisions, heavy quarks are – due to their large mass – mainly generated in interactions with large momentum transfers. Because of this, their production can be described perturbatively and heavy-flavour production rates offer the possibility to validate predictions of perturbative QCD. In addition, heavy flavours experience the whole evolution of the collision system and can therefore serve to investigate the properties of the Quark-Gluon Plasma generated in heavy-ion collisions. As a reference for heavy-ion collisions, smaller collision systems like proton-proton collisions are examined.

Heavy-flavour production processes can be classified in three categories: pair creation, flavour excitation and gluon splitting, each of them leading to a characteristic angular distribution of the outgoing particles. Measurements on angular correlations of heavy-flavour particles might thus provide information on the contribution of individual production processes.

Based on Monte Carlo simulations with the event generator PYTHIA 8, the feasibility of investigating production processes of charm and bottom quarks in 2.76 TeV proton-proton collisions via azimuthal correlations between heavy-flavour decay electrons (HFEs) and between HFEs and hadrons is discussed.