Reconstruction and Identification of Electrons

This note discusses the overall ATLAS detector performance for the reconstruction and identification of high-pT electrons over a wide range of transverse energies, spanning from 10 GeV to 1000 GeV. Electrons are reconstructed using information from both the calorimeter and the inner detector. The reference offline performance in terms of efficiencies for electrons from various sources and of rejections against jets is described. In a second part, this note discusses the requirements and prospects for electrons as probes for physics within and beyond the Standard Model: Higgs-boson, supersymmetry and exotic scenarios. In the last part, this note outlines prospects for electron identification with early data, corresponding to an integrated luminosity of 100 pb−1 , focusing on the use of the signal from Z → ee decays for a data-driven evaluation of the offline performance.