Measuring Electron Identification Efficiency in the ATLAS Detector

by Atanay Odella

Wednesday Apr 15, 2026, 1:00 PM → 2:00 PM Europe/Madrid

IFAE Seminar Room (In-person)

Identifying electrons amidst the spray of particles at the Large Hadron Collider is one of the most significant data-processing challenges in modern physics. This talk details the multi-stage process of electron reconstruction in the ATLAS experiment. We will discuss the fundamental physics of how electrons interact with the detector’s layers and how these signals are combined into a Likelihood-based identification score. A central focus will be the Tag and Probe technique, an elegant statistical method that allows to measure detector performance using real data rather than relying solely on simulations. We will conclude with a look at the future, discussing how Deep Neural Networks (DNNs) are being trained on low-level calorimeter data to push identification limits further.