Measurement of the anomalous precession frequency of the muon in the Fermilab Muon g-2 Experiment


T. Albahri, University of Liverpool
A. Anastasi, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Anisenkov, Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
K. Badgley, Fermi National Accelerator Laboratory
S. Baeßler, University of Virginia
I. Bailey, Lancaster University
V. A. Baranov, Joint Institute for Nuclear Research, Dubna
E. Barlas-Yucel, University of Illinois Urbana-Champaign
T. Barrett, Cornell University
A. Basti, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Bedeschi, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Berz, Michigan State University
M. Bhattacharya, University of Mississippi
H. P. Binney, University of Washington
P. Bloom, North Central College
J. Bono, Fermi National Accelerator Laboratory
E. Bottalico, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
T. Bowcock, University of Liverpool
G. Cantatore, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
R. M. Carey, Boston University
B. C.K. Casey, Fermi National Accelerator Laboratory
D. Cauz, Istituto Nazionale di Fisica Nucleare - INFN
R. Chakraborty, University of Kentucky
S. P. Chang, Institute for Basic Science, Daejeon
A. Chapelain, Cornell University
S. Charity, Fermi National Accelerator Laboratory
R. Chislett, University College London
J. Choi, Institute for Basic Science, Daejeon
Z. Chu, Shanghai Jiao Tong University
T. E. Chupp, University of Michigan, Ann Arbor
S. Corrodi, Argonne National Laboratory
L. Cotrozzi, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
J. D. Crnkovic, Brookhaven National Laboratory
S. Dabagov, INFN, Laboratori Nazionali Di Frascati

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The 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 experiment's 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 ωam, and the systematic uncertainties on the result.

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