ATLAS Electron Reconstruction Activities
The remarkable discovery of the Higgs boson in the experimentally harsh LHC environment would not have been possible without the deep understanding of the detector performance and optimisation of the reconstruction and identification algorithms.
An electron or photon is reconstructed using energy deposits in the calorimeter (clusters). For electron inner detector tracks are matched to the cluster providing information on the particle’s origin and direction and therefore of its momentum
Members of the Sheffield ATLAS group have been playing a leading role in the area electron performance and co-ordinated the development of the new electron reconstruction algorithm used by the ATLAS experiment in the Higgs discovery. This improved electron reconstruction resulted of 30% in the expected sensitivity for the Higgs discovery in the H → ZZ(*) → 4l channel.
Currently, members of the Sheffield ATLAS group are leading the electron and photon reconstruction, identification and energy calibration group of the ATLAS Collaboration.
Sketch of a reconstructed electron in the ATLAS detector
Improved Electron Reconstruction employed for the Higgs boson discovery
Department of Physics and Astronomy, University of Sheffield, Hounsfield Road, Sheffield S3 7RH, UK
Page maintained by Ian.Dawson@cern.ch.