# 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!

## Measurement of low transverse momentum electrons from heavy-flavour hadron decays in Pb-Pb collisions at 5 TeV with ALICE

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

Mattia Faggin (Universita e INFN, Padova (IT))

### Description

Due to their high masses ($m_{\text{c}}\approx 1.5\text{ GeV}/c^2$, $m_{\text{b}}\approx 4.8\text{ GeV}/c^2$), charm and beauty quarks are mostly produced in the initial hard scattering processes, happening immediately after the lead nuclei collide. This process has typical time scales shorter than the Quark-Gluon Plasma formation time, therefore by studying the kinematic properties of heavy-flavour particles, the medium can be investigated. In particular, it is important to understand how these quarks lose energy by traversing the medium and to test shadowing, hadronization and flow mechanisms.

In this poster the status and progresses on the results concerning open heavy-flavour detection through semi-electronic decay channels in Pb-Pb collisions at the centre of mass energy per nucleon pair of $\sqrt{s_{\text{NN}}}=5.02\text{ TeV}$ registered by ALICE will be shown. Electrons are identified using the information provided by the central barrel detectors (Inner Tracking System, Time Projection Chamber, Time Of Flight). Most of the electrons come from background sources, such as photon conversions
in the detector material and Dalitz decays of light mesons,
which are tagged with an invariant mass technique.
After their subtraction, the $p_{\text{T}}$ spectrum of electrons from heavy-flavour hadron decays
in the transverse momentum region $0.5\text{ GeV}/c\leq p_{\text{T}}\leq 6\text{ GeV}/c$ can be obtained and the nuclear modification factor $R_{\text{AA}}$ can be computed.

Centralised submission by Collaboration Presenter name already specified Experiment ALICE

### Primary author

Mattia Faggin (Universita e INFN, Padova (IT))