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



Aad, G, Abbott, B, Abbott, DC, Abud, A Abed, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2895 more authors) (2023) Studies of the muon momentum calibration and performance of the ATLAS detector with pp collisions at √s=13 TeV EUROPEAN PHYSICAL JOURNAL C, 83 (8). 686-. ISSN 1434-6044, 1434-6052

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Abstract

This paper presents the muon momentum calibration and performance studies for the ATLAS detector based on the pp collisions data sample produced at s = 13 TeV at the LHC during Run 2 and corresponding to an integrated luminosity of 139 fb - 1 . An innovative approach is used to correct for potential charge-dependent momentum biases related to the knowledge of the detector geometry, using the Z→ μ+μ- resonance. The muon momentum scale and resolution are measured using samples of J/ ψ→ μ+μ- and Z→ μ+μ- 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 Υ → μ+μ- events. At the Z (J/ ψ) 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 in situ correction for momenta up to 450 GeV with a precision better than 0.03 TeV - 1 .

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 29 Aug 2023 08:16
Last Modified: 22 May 2026 20:24
DOI: 10.1140/epjc/s10052-023-11584-x
Open Access URL: https://link.springer.com/article/10.1140/epjc/s10...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3172367
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