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Muon reconstruction performance of the ATLAS detector in proton–proton collision data at √s=13 TeV

ATLAS Collaboration; (2016) Muon reconstruction performance of the ATLAS detector in proton–proton collision data at √s=13 TeV. The European Physical Journal C , 76 , Article 292. 10.1140/epjc/s10052-016-4120-y. Green open access

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Abstract

This article documents the performance of the ATLAS muon identification and reconstruction using the LHC dataset recorded at s√=13s=13 TeV in 2015. Using a large sample of J/ψ→μμJ/ψ→μμ and Z→μμZ→μμ decays from 3.2 fb −1−1 of pp collision data, measurements of the reconstruction efficiency, as well as of the momentum scale and resolution, are presented and compared to Monte Carlo simulations. The reconstruction efficiency is measured to be close to 99 %99 % over most of the covered phase space ( |η|<2.5|η|<2.5 and 5<pT<1005<pT<100 GeV). The isolation efficiency varies between 93 and 100 %100 % depending on the selection applied and on the momentum of the muon. Both efficiencies are well reproduced in simulation. In the central region of the detector, the momentum resolution is measured to be 1.7 %1.7 % ( 2.3 %2.3 % ) for muons from J/ψ→μμJ/ψ→μμ ( Z→μμZ→μμ ) decays, and the momentum scale is known with an uncertainty of 0.05 %0.05 % . In the region |η|>2.2|η|>2.2 , the pTpT resolution for muons from Z→μμZ→μμ decays is 2.9 %2.9 % while the precision of the momentum scale for low- pTpT muons from J/ψ→μμJ/ψ→μμ decays is about 0.2 %0.2 % .

Type: Article
Title: Muon reconstruction performance of the ATLAS detector in proton–proton collision data at √s=13 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1140/epjc/s10052-016-4120-y
Publisher version: http://dx.doi.org/10.1140/epjc/s10052-016-4120-y
Language: English
Additional information: Copyright © CERN for the benefit of the ATLAS collaboration 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1496754
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