Measurement of the nuclear modification factor of electrons from heavy-flavour hadron decays in Pb-Pb collisions at {\surd}sNN = 2.76 TeV with ALICE at the LHC

TL;DR

This paper reports on the measurement of how electrons from heavy-flavour hadron decays are suppressed in lead-lead collisions at 2.76 TeV, providing insights into the quark-gluon plasma properties.

Contribution

It presents the first measurement of the nuclear modification factor of electrons from heavy-flavour decays at LHC energies, highlighting suppression patterns in central collisions.

Findings

Suppression of electrons observed for pt > 3.5 GeV/c in central collisions

Electrons identified in the 1.5-6 GeV/c pt range

Results indicate energy loss of heavy quarks in quark-gluon plasma

Abstract

We present a measurement of the nuclear modification factor of electrons from heavy- flavour hadron decays at midrapidity in Pb-Pb collisions at {\surd}sNN = 2.76 TeV. Electrons are identified in the pt range 1.5 GeV/c < pt < 6 GeV/c. A suppression is seen for pt larger than 3.5 GeV/c in the most central collisions.