Electron performance measurements with the ATLAS detector using the 2010 LHC proton-proton collision data

TL;DR

This paper reports detailed measurements of electron performance in the ATLAS detector using 2010 LHC proton-proton collision data, focusing on calibration, efficiency, and response characteristics.

Contribution

It provides comprehensive analysis of electron identification, energy calibration, and detector alignment using real collision data, which was not previously documented in detail.

Findings

Electron energy scale and resolution characterized

Electron identification and trigger efficiencies measured

Charge misidentification probability evaluated

Abstract

Detailed measurements of the electron performance of the ATLAS detector at the LHC are reported, using decays of the Z, W and J/psi particles. Data collected in 2010 at sqrt(s)=7 TeV are used, corresponding to an integrated luminosity of almost 40 pb^-1. The inter-alignment of the inner detector and the electromagnetic calorimeter, the determination of the electron energy scale and resolution, and the performance in terms of response uniformity and linearity are discussed. The electron identification, reconstruction and trigger efficiencies, as well as the charge misidentification probability, are also presented.