Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $\sqrt{s}=$ 13 TeV

TL;DR

This paper evaluates the CMS muon detector's performance at 13 TeV proton-proton collisions, demonstrating that the upgraded system meets design goals and performs well under high-luminosity conditions, with results matching simulations.

Contribution

It provides a comprehensive performance assessment of the CMS muon system after significant upgrades for high-energy collisions, confirming its effectiveness and reliability.

Findings

Performance parameters meet all design specifications

System performs as well or better than previous configurations

Simulation accurately reproduces measured performance

Abstract

The CMS muon detector system, muon reconstruction software, and high-level trigger underwent significant changes in 2013-2014 in preparation for running at higher LHC collision energy and instantaneous luminosity. The performance of the modified system is studied using proton-proton collision data at center-of-mass energy $\sqrt{s}=$ 13 TeV, collected at the LHC in 2015 and 2016. The measured performance parameters, including spatial resolution, efficiency, and timing, are found to meet all design specifications and are well reproduced by simulation. Despite the more challenging running conditions, the modified muon system is found to perform as well as, and in many aspects better than, previously. We dedicate this paper to the memory of Prof. Alberto Benvenuti, whose work was fundamental for the CMS muon detector.