TY - JOUR
T1 - Muon reconstruction and identification efficiency in ATLAS using the full Run 2 pp collision data set at √s=13 TeV
AU - Aad, G.
AU - Åkesson, T.P.A.
AU - Bocchetta, S.S.
AU - Corrigan, E.E.
AU - Doglioni, C.
AU - Geisen, J.
AU - Gregersen, K.
AU - Hansen, E.
AU - Hedberg, V.
AU - Jarlskog, G.
AU - Kellermann, E.
AU - Konya, B.
AU - Lytken, E.
AU - Mankinen, K.H.
AU - Marcon, C.
AU - Mjörnmark, J.U.
AU - Mullier, G.A.
AU - Poettgen, R.
AU - Poulsen, T.
AU - Skorda, E.
AU - Smirnova, O.
AU - Zwalinski, L.
AU - ATLAS Collaboration
PY - 2021
Y1 - 2021
N2 - This article documents the muon reconstruction and identification efficiency obtained by the ATLAS experiment for 139 fb - 1 of pp collision data at s=13 TeV collected between 2015 and 2018 during Run 2 of the LHC. The increased instantaneous luminosity delivered by the LHC over this period required a reoptimisation of the criteria for the identification of prompt muons. Improved and newly developed algorithms were deployed to preserve high muon identification efficiency with a low misidentification rate and good momentum resolution. The availability of large samples of Z→ μμ and J/ ψ→ μμ decays, and the minimisation of systematic uncertainties, allows the efficiencies of criteria for muon identification, primary vertex association, and isolation to be measured with an accuracy at the per-mille level in the bulk of the phase space, and up to the percent level in complex kinematic configurations. Excellent performance is achieved over a range of transverse momenta from 3 GeV to several hundred GeV, and across the full muon detector acceptance of | η| < 2.7. © 2021, CERN for the benefit of the ATLAS collaboration.
AB - This article documents the muon reconstruction and identification efficiency obtained by the ATLAS experiment for 139 fb - 1 of pp collision data at s=13 TeV collected between 2015 and 2018 during Run 2 of the LHC. The increased instantaneous luminosity delivered by the LHC over this period required a reoptimisation of the criteria for the identification of prompt muons. Improved and newly developed algorithms were deployed to preserve high muon identification efficiency with a low misidentification rate and good momentum resolution. The availability of large samples of Z→ μμ and J/ ψ→ μμ decays, and the minimisation of systematic uncertainties, allows the efficiencies of criteria for muon identification, primary vertex association, and isolation to be measured with an accuracy at the per-mille level in the bulk of the phase space, and up to the percent level in complex kinematic configurations. Excellent performance is achieved over a range of transverse momenta from 3 GeV to several hundred GeV, and across the full muon detector acceptance of | η| < 2.7. © 2021, CERN for the benefit of the ATLAS collaboration.
U2 - 10.1140/epjc/s10052-021-09233-2
DO - 10.1140/epjc/s10052-021-09233-2
M3 - Article
SN - 1434-6044
VL - 81
JO - European Physical Journal C
JF - European Physical Journal C
IS - 7
M1 - 578
ER -