# Quark Matter 2018

13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

## Production of electrons from heavy-flavour hadron decays in proton-proton and Xe-Xe collisions with ALICE at the LHC

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

### First floor and third floor

#### Palazzo del Casinò

Poster Open heavy flavour

### Speaker

Sebastian Hornung (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))

### Description

At the LHC energies, heavy quarks (i.e. charm and beauty) are produced in proton-proton (pp) collisions mainly via hard partonic scattering processes. They provide an essential testing ground for perturbative QCD calculations. In heavy-ion collisions, heavy quarks are produced in a shorter timescale than the quark-gluon plasma. Therefore, they experience the full collision history carrying unique information on the medium properties. On this regard, heavy-flavour measurements in pp collisions serve as a baseline for the heavy-ion measurements.
In this poster we will show the status of measurements of the production of electrons from heavy-flavour hadron decays in pp collisions at different collision energies. The nuclear modification factor ($R_{\rm AA}$) of electrons from heavy-flavour hadron decays in Xe-Xe collisions will be also discussed. The comparison with Pb-Pb data allows us to investigate the influence of different system geometry and size at similar energy densities. The analysis procedure employed for measuring the spectra of electrons from the heavy-flavour hadron decays will be discussed, including the most recent data-driven method used to subtract the large electron background component from photon conversion and Dalitz decay. Comparisons with model calculations including the interaction of heavy quarks with the hot, dense, and deconfined medium will be presented.

Content type Experiment ALICE Presenter name already specified

### Primary authors

Andrea Dubla (GSI) Sebastian Hornung (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))