Muon reconstruction and identification with the Run II D0 detector

TL;DR

This paper details the methods used by the D0 Collaboration to reconstruct and identify muons in Run II data, evaluating their performance and modeling accuracy for high-energy physics analyses.

Contribution

It provides a comprehensive overview of muon reconstruction and identification techniques, including performance metrics and simulation modeling for the D0 detector during Run II.

Findings

Muon identification efficiency ranges from 72% to 89%.

Muon track reconstruction efficiency ranges from 85% to 92%.

Isolation criteria achieve 87% to 99% background rejection.

Abstract

We present an overview of the muon reconstruction and identification methods employed by the D0 Collaboration to analyze the Run II (2001-2011) ppbar data of the Fermilab Tevatron collider at sqrt s = 1.96 TeV. We discuss the performance of these methods, how it is measured using D0 data, and how it is properly modeled by the D0 simulation program. In its pseudorapidity acceptance, eta< 2, the muon system identifies high-pT muons (pT>10 GeV) with efficiencies ranging from 72% to 89%. Muons tracks are reconstructed in the D0 central tracking system with efficiencies ranging from 85% to 92% and with a typical relative momentum resolution of 10% for pT = 40 GeV. Isolation criteria reject multijet background with efficiencies of 87% to 99%.