Electron and Photon Reconstruction and Identification with the ATLAS Detector

An excellent performance of the reconstruction, calibration and identification of electrons and photons with the ATLAS detector at the LHC is a key component to realize the ATLAS full physics potential, both in searches for new physics and in precision measurements. For instance, all these played a critical role in the discovery of a Higgs boson, announced by the ATLAS Collaboration in 2012, and in the measurement of its properties. This poster will highlight the reconstruction and identification of electrons and photons, and present the data-driven measurement of the efficiencies.