Electron identification and multi-dimensional unfolding studies on ALICE

Abstract

In this thesis, a study of electron measurement in Pb-Pb collisions at 2.76 TeV with the ALICE experiment is presented. First electron identification methods are studied with two sets of cuts, making use of the Time Projection Chamber (TPC), Time-of-Flight (TOF) and Inner Tracking System (ITS) detectors. Methods of unfolding of the $p_T,\eta,\phi$ spectrum of electrons are discussed, including a 3-dimensional Bayesian unfolding method and a minimization unfolding method. These methods are applied to simulated data and compared with the MC spectrum. The Bayesian method is applied to real data afterwards.