Measurement of the anomalous precession frequency of the muon in the Fermilab Muon Experiment
T. Albahri (University of Liverpool, Liverpool, United Kingdom); A. Anastasi (INFN, Sezione di Pisa, Pisa, Italy); A. Anisenkov (Budker Institute of Nuclear Physics, Novosibirsk, Russia); K. Badgley (Fermi National Accelerator Laboratory, Batavia, Illinois, USA); S. Baeßler (University of Virginia, Charlottesville, Virginia, USA); et al - Show all 178 authors
The Muon Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency 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 experiment’s muon storage ring, the precession frequency measurement determines a muon magnetic anomaly of (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.