Muon Track Matching

TL;DR

This paper discusses the methods for matching muon tracks between the inner tracker and outer muon system, emphasizing the importance for accurate momentum measurement and challenges in jet environments.

Contribution

It presents a detailed study of muon track matching procedures, especially for high-momentum muons within jets, using simulated b-jet samples.

Findings

Matching improves momentum resolution at high momenta.

Jet environment complicates muon track matching.

Study provides insights into optimizing matching algorithms.

Abstract

For most physical processes the tracks observed in the muon stations must be matched with the corresponding tracks in the inner tracker, the external muon system providing muon identification and triggering but the tracker points giving the precise momentum measurement at lower momenta. For high momenta the momentum resolution is much improved by the interconnection of inner and outer measurements. The matching of outer and inner measurements is more delicate in case of muons embedded in jets. A study of the matching procedure was carried out using samples of (b, anti b) jets at high Pt, requiring (b, anti b) -> mu decays.