TY - JOUR
T1 - Studies of the muon momentum calibration and performance of the ATLAS detector with pp collisions at √s = 13 TeV
AU - ATLAS Collaboration
AU - Newman, Paul
PY - 2023/8/1
Y1 - 2023/8/1
N2 - 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.
AB - 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.
U2 - 10.1140/epjc/s10052-023-11584-x
DO - 10.1140/epjc/s10052-023-11584-x
M3 - Article
SN - 1434-6044
VL - 83
JO - European Physical Journal C
JF - European Physical Journal C
M1 - 686
ER -