Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 48: Methods in Particle Physics III

T 48.3: Talk

Wednesday, March 18, 2026, 16:45–17:00, KH 00.020

Muon Momentum Scale and Resolution Calibration for CMS in Run 3 — •Dorian Guthmann¹, Markus Klute¹, Filippo Errico², and Jost von den Driesch¹ — ¹Karlsruhe Institute of Technology — ²INFN

Precise muon momentum calibration is essential for many analyses at the LHC, as detector misalignment and magnetic field uncertainties lead to systematic differences between data and simulation. Within the CMS experiment, updated scale and resolution corrections for Run 3 data were derived over the past year using the ScaReKIT framework, which was also optimized with a focus on performance and stability. These improvements streamline the calibration workflow and reduce the computational cost of producing accurate calibration factors. This presentation highlights the motivation, methodology, and recent progress in refining the CMS muon momentum calibration, as well as the outlook for further improvements in upcoming datasets.

Keywords: Muon; Momentum; Calibration; pT; CMS