paper

Studies of the muon momentum calibration and performance of the ATLAS detector with collisions at =13 TeV

arXiv:2212.07338 · doi:10.1140/epjc/s10052-023-11584-x

Abstract

This paper presents the muon momentum calibration and performance studies for the ATLAS detector based on the collisions data sample produced at =13 TeV at the LHC during Run 2 and corresponding to an integrated luminosity of 139 fb. An innovative approach is used to correct for potential charge-dependent momentum biases related to the knowledge of the detector geometry, using the resonance. The muon momentum scale and resolution are measured using samples of and events. A calibration procedure is defined and applied to simulated data to match the performance measured in real data. The calibration is validated using an independent sample of events. At the () peak, the momentum scale is measured with an uncertainty at the 0.05% (0.1%) level, and the resolution is measured with an uncertainty at the 1.5% (2%) level. The charge-dependent bias is removed with a dedicated {\em in situ} correction for momenta up to 450 GeV with a precision better than 0.03 TeV.

54 pages in total, author list starting at page 37, 15 figures, 3 tables. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/MUON-2022-01/

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