Electron and Photon Reconstruction and Identification with the ATLAS Detector

Abstract

The status of the reconstruction and identification of electrons and photons in the ATLAS detector is presented. Electrons and photons are crucial for both a thorough understanding of the detector and a wide variety of physics studies. An electron identification efficiency of 64% can be reached for a jet rejection of 105. The electromagnetic energy scale can be obtained in–situ with a permil accuracy once the material in front of the electromagnetic calorimeter will have been verified with high accuracy. The reconstruction process is described along with the identification and calibration techniques developed to obtain the required performance.