Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton–proton collision data

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Abstract: This paper presents the performance of the ATLAS muon reconstruction during the LHC run with pp collisions at s√=7–8 TeV in 2011–2012, focusing mainly on data collected in 2012. Measurements of the reconstruction efficiency and of the momentum scale and resolution, based on large reference samples of J/ψ→μμ, Z→μμ and Υ→μμ decays, are presented and compared to Monte Carlo simulations. Corrections to the simulation, to be used in physics analysis, are provided. Over most of the covered phase space (muon |η|<2.7 and 5≲pT≲100 GeV) the efficiency is above 99% and is measured with per-mille precision. The momentum resolution ranges from 1.7% at central rapidity and for transverse momentum pT≃10 GeV, to 4% at large rapidity and pT≃100 GeV. The momentum scale is known with an uncertainty of 0.05% to 0.2% depending on rapidity. A method for the recovery of final state radiation from the muons is also presented

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch
Anmerkungen
The European physical journal. C, Particles and fields.. - 74, 11 (2014) , 3130, ISSN: 1434-6052

DOI
10.1140/epjc/s10052-014-3130-x
URN
urn:nbn:de:bsz:25-freidok-2231915
Rechteinformation
Kein Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
25.03.2025, 13:47 MEZ

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