Measurement of the Anomalous Precession Frequency of the Muon in the Fermilab Muon g-2 Experiment
AbstractThe Muon g − 2 Experiment at Fermi National Accelerator Laboratory (FNAL)
has measured the muon anomalous precession frequency
ωam to an
uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic,
with data collected in four storage ring configurations during its first physics
run in 2018. When combined with a precision measurement of the magnetic
field of the experimentís muon storage ring, the precession frequency
measurement determines a muon magnetic anomaly of
aμ(FNAL) = 116 592 040(54) ◊ 10−11
(0.46 ppm). This article describes the
multiple techniques employed in the reconstruction, analysis, and fitting of the
data to measure the precession frequency. It also presents the averaging of
the results from the 11 separate determinations of
and the systematic uncertainties on the result.
Muon g-2 Collaboration,
Physical Review D, 103 (2021) 072002.
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