Identification and energy calibration of hadronic tau lepton decays at the LHC

TL;DR

This paper compares the ATLAS and CMS algorithms for identifying and calibrating hadronic tau decays at the LHC, highlighting their differences and performance metrics crucial for physics analyses.

Contribution

It provides a detailed comparison of the ATLAS and CMS tau identification and calibration algorithms, including performance measurements.

Findings

Both algorithms achieve high identification efficiency.

Performance metrics vary between the two experiments.

Calibration improves energy resolution for tau decays.

Abstract

The identification of hadronic tau lepton decays is an important requirement for the LHC physics program, both in terms of standard model measurements and the search for beyond-the-standard-model physics. The ATLAS and CMS algorithms for identification and energy calibration of hadronic tau lepton decays are conceptually different. They are described together with measurements of relevant performance figures.