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

0576810 - FZÚ 2024 RIV DE eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abeling, K. - Chudoba, Jiří - Federičová, Pavla - Hejbal, Jiří - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … celkem 2919 autorů
Studies of the muon momentum calibration and performance of the ATLAS detector with pp collisions at √s ​=13 TeV.
European Physical Journal C. Roč. 83, Aug. (2023), č. článku 686. ISSN 1434-6044. E-ISSN 1434-6052
Výzkumná infrastruktura: CERN-CZ III - 90240
Institucionální podpora: RVO:68378271
Klíčová slova: momentum: calibration * ATLAS: performance * detector: geometry
Obor OECD: Particles and field physics
Impakt faktor: 4.4, rok: 2022
Způsob publikování: Open access

This paper presents the muon momentum calibration and performance studies for the ATLAS detector based on the pp collisions data sample produced at ss ​ = 13 TeV at the LHC during Run 2 and corresponding to an integrated luminosity of 139 fb−1fb−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−Z→μ+μ− resonance. The muon momentum scale and resolution are measured using samples of J/ψ→μ+μ−J/ψ→μ+μ− and Z→μ+μ−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−Υ→μ+μ− events. At the Z(J/ψ)(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.
Trvalý link: https://hdl.handle.net/11104/0346210