Introduction
Electron reconstruction in ATLAS combines the information from the Inner detector and the electromagnetic calorimeter. The electron identification and trigger efficiencies are crucial for benchmark processes W,Z in early data.
The Tag-and-Probe Method
Comments on the InsituPerformance framework.
Selection Criteria
Fit Signal and Background
Extended Maximum Likelihood (EML) :
Breit-Wigner:
Approximate parton luminosity term:
Crystal Ball:
Datasets
Results