Abstract
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
.