Muon identification for LHCb Run 3

TL;DR

This paper presents two new muon identification algorithms developed for the LHCb upgrade, aiming to maintain or improve performance in a higher luminosity environment with a solely software-based trigger system.

Contribution

Introduction of two novel muon identification algorithms tailored for LHCb's Run 3 upgrade and high-luminosity conditions.

Findings

Algorithms achieve high signal efficiency.

Effective background reduction demonstrated.

Performance meets or exceeds Run 2 standards.

Abstract

Muon identification is of paramount importance for the physics programme of LHCb. In the upgrade phase, starting from Run 3 of the LHC, the trigger of the experiment will be solely based on software. The luminosity increase to $2\times10^{33}$ cm$^{-2}$s$^{-1}$ will require an improvement of the muon identification criteria, aiming at performances equal or better than those of Run 2, but in a much more challenging environment. In this paper, two new muon identification algorithms developed in view of the LHCb upgrade are presented, and their performance in terms of signal efficiency versus background reduction is shown.