Multiplicity Dependence of Heavy-Flavour Hadron Decay Electron Production in Collisions at √sNN = 8.16 Measured with ALICE at the LHC

Preeti Dhankher

doi:10.3390/proceedings2019010028

Abstract

A Large Ion Collider Experiment (ALICE) at the Large Hadron collider (LHC) is a heavy-ion dedicated experiment designed to study nuclear matter at extreme condition of high temperature and high density at which quarks are deconfined and give rise to a new state of matter known as Quark Gluon Plasma (QGP). Heavy flavours (charm and beauty), are produced in the initial stages of hadronic collisions in hard scattering processes and therefore are effective probes to study the QGP. In this contribution, recent measurements of the production of electrons from heavy-flavour hadron decays, their nuclear modification factor and the self-normalised yield measured up to 14 in collisions at √sNN = 8.16 TeV collected in LHC Run2 in 2016 are presented.

Highlights

Heavy quarks, due to their large masses, are produced in the initial stages of hadronic collisions in hard scattering processes, provide an important testing ground for perturbative QCD calculations and are effective probes to investigate the properties of the hot and dense QCD matter produced in the heavy-ion collisions
A deeper understanding of heavy-flavour production in Pb–Pb collisions requires the detailed studies of Cold Nuclear Matter (CNM) effects in order to clarify the role of initial- and final-state effects on their production
The aforementioned effects on heavy-quark production can be studied in p–Pb collisions by measuring electrons from heavy-flavour hadron decays (HFE) where the formation and the kinematic properties of heavy-flavour hadrons can be influenced at all stages by CNM effects and by concurrent

Summary

Introduction

Heavy quarks (charm and beauty), due to their large masses (mq >> λQCD ), are produced in the initial stages of hadronic collisions in hard scattering processes, provide an important testing ground for perturbative QCD calculations and are effective probes to investigate the properties of the hot and dense QCD matter produced in the heavy-ion collisions. The aforementioned effects on heavy-quark production can be studied in p–Pb collisions by measuring electrons from heavy-flavour hadron decays (HFE) where the formation and the kinematic properties of heavy-flavour hadrons can be influenced at all stages by CNM effects and by concurrent. In this proceedings, we present the new results on the production of electrons from heavy-flavour hadron decays, their nuclear modification factor and the self-normalised yield measured up to. The high-pT measurements are interesting because the contribution of electrons from beauty-hadron decays is expected to dominate

Methods

Results

Conclusion