Performance of the reconstruction and identification of high-momentum muons in proton-proton collisions at $\sqrt{s} =$ 13 TeV

TL;DR

This paper evaluates the performance of reconstructing and identifying very high-momentum muons in proton-proton collisions at 13 TeV, providing insights into their efficiencies, resolution, and scale for physics beyond the standard model.

Contribution

It presents the first dedicated studies of high-momentum muon reconstruction performance at the LHC, focusing on muons up to 1.8 TeV using CMS data from 2016 and 2017.

Findings

Measured efficiencies and resolutions for high-momentum muons.

Assessed momentum scale and showering effects.

Provided data-driven corrections for high-momentum muon analysis.

Abstract

The CMS detector at the LHC has recorded events from proton-proton collisions, with muon momenta reaching up to 1.8 TeV in the collected dimuon samples. These high-momentum muons allow direct access to new regimes in physics beyond the standard model. Because the physics and reconstruction of these muons are different from those of their lower-momentum counterparts, this paper presents for the first time dedicated studies of efficiencies, momentum assignment, resolution, scale, and showering of very high momentum muons produced at the LHC. These studies are performed using the 2016 and 2017 data sets of proton-proton collisions at $\sqrt{s} =$ 13 TeV with integrated luminosities of 36.3 and 42.1 fb$^{-1}$, respectively.