The ATLAS Tau Trigger Performance during LHC Run 1 and Prospects for Run 2

TL;DR

This paper reviews the performance of the ATLAS tau trigger during LHC Run 1 and discusses planned improvements for Run 2 to enhance detection of hadronic tau decays.

Contribution

It provides a comprehensive summary of tau trigger performance in Run 1 and outlines new strategies for Run 2 to improve tau identification.

Findings

Tau trigger performance was effective during Run 1.

Run 2 strategies aim to improve tau detection efficiency.

The paper sets the stage for future trigger enhancements.

Abstract

Triggering on hadronic tau decays is essential for a wide variety of analyses of interesting physics processes at ATLAS. The ATLAS tau trigger combines information from the tracking detectors and calorimeters to identify the signature of hadronically decaying tau leptons. In Run 2 operation expected to start in 2015, the trigger strategies will become more important than ever before. In this paper, the tau trigger performance during Run 1 is summarized and also an overview of the developments of Run 2 tau trigger strategy is presented.