electronids
Electron IDs are a set of techniques used in particle detectors to classify reconstructed objects as electrons or as other particles. They are essential for analyses involving electromagnetic processes and for suppressing backgrounds in hadronic final states. In collider detectors, electron identification combines information from the inner tracking system, the electromagnetic calorimeter, and, when available, transition-radiation detectors and hadronic calorimetry.
Discriminating variables include the electromagnetic shower shape in the calorimeter (such as lateral and longitudinal energy
Electron identification is implemented as both cut-based and multivariate algorithms. Cut-based IDs define loose, medium, and
Performance is described by electron efficiency (the probability to pass the ID for true electrons) and the