Speaker
Description
Lattice Quantum Chromodynamics (QCD) calculation predicts that a colour-deconfined Quark-Gluon Plasma (QGP) is formed at high temperature and high energy density reached in ultra-relativistic heavy-ion collisions. Heavy quarks (charm and beauty) are mostly produced by initial hard scatterings before the formation of the QGP. Therefore heavy-flavour hadrons are ideal probes to investigate the properties of the hot and dense QCD matter. In Pb-Pb collisions, a strong suppression of the production of heavy-flavour hadrons with high transverse momentum has been observed.
A deeper understanding of heavy-flavour production in nucleus-nucleus collisions requires detailed studies of Cold Nuclear Matter (CNM) effects in order to clarify the role of initial- and final-state effects on their production. CNM effects include shadowing and/or saturation of partons, energy loss in CNM and $k_{\rm{T}}$-broadening. Such effects on heavy quark production can be studied in proton-nucleus collisions by measuring electrons from heavy-flavour hadron decays.
The nuclear modification factor of electrons from heavy-flavor hadron decays was measured up to $p_{\rm{T}}$ = 20 GeV/$c$ in p-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 eV. The result suggests that heavy-flavour production in p-Pb collisions scales with the number of binary nucleon-nucleon collisions. High $p_{\rm{T}}$ electrons are particularly interesting because they mainly originate from beauty hadron decays. In this poster we will present new results on the production of electrons from heavy-flavor hadron decays and its nuclear modification factor up to approximately 30 GeV/$c$ in p-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 8.16 TeV collected in LHC-Run2 in 2016.
| Content type | Experiment |
|---|---|
| Collaboration | ALICE |
| Centralised submission by Collaboration | Presenter name already specified |
