Tracker and Calorimeter Performance for the Identification of Hadronic Tau Lepton Decays in ATLAS

TL;DR

This paper discusses the performance of the ATLAS detector in identifying hadronic tau decays, emphasizing the importance of calorimeter and tracking data for accurate reconstruction in various physics analyses.

Contribution

It presents the current status and efficiency measurements of tau reconstruction and identification in ATLAS, validated against Monte Carlo simulations.

Findings

Tau identification efficiencies are consistent with predictions.

The study enhances understanding of detector performance for tau leptons.

Results support reliable use of tau identification in physics analyses.

Abstract

Tau leptons play an important role in the physics program in ATLAS. They can be used not only in searches for new phenomena like the Higgs boson or Supersymmetry, or for electroweak measurements but also in detector related studies like the determination of the missing transverse energy scale. Identifying hadronically decaying tau leptons requires good understanding of the detector performance, combining information from calorimeter and tracking detectors. The current status of the tau reconstruction and identification with the ATLAS detector is presented. The identification efficiencies are measured with W -> tau nu events, and found to be consistent with the prediction from Monte Carlo simulations.