Studies of the misidentification probability of electrons as photons at √(s) = 13 TeV with the CMS experiment

In high energy proton-proton collisions, several processes lead to final states containing at least one photon. These are of particular interest in many analyses, for example searches for physics beyond the Standard Model. A possible source of backgrounds are objects misreconstructed as photons. To accurately estimate the contribution of these objects to a photon sample, the origin of reconstructed photons has to be investigated. This presentation focuses on electrons which are misidentified as photons. The propability of an electron being reconstructed as a photon is described by the so called ''fake rate''. The fake rate is studied in data and simulation at a center-of-mass energy of 13 TeV with the CMS experiment. As a clean electron source, the Z-boson decay to electrons is used. The dependency of the fake rate on several observables is studied and compared to earlier results.