Speakers
Description
The muon anomalous magnetic moment, aμ=(gμ−2)/2, is a precision observable that provides a stringent test of the Standard Model and a sensitive probe of new physics. The Fermilab Muon g−2 experiment has completed the world’s most precise measurement of aμ, reaching a total uncertainty of 127 ppb. This talk will review the experimental method, including the storage of polarized muons, the measurement of the anomalous spin-precession frequency, magnetic-field calibration, and the principal analysis and systematic-control strategies.
The final Fermilab result will be discussed in the context of comparisons with Standard-Model predictions. The talk will also introduce the ongoing J-PARC muon g−2/EDM experiment, which uses an ultra-cold low-emittance muon beam, three-dimensional spiral injection, a compact storage magnet, and positron tracking to realize an independent measurement with distinct systematic uncertainties.
Finally, the prospects for a future muon g−2 experiment at HIAF will be presented. The proposed CANTON-μ program aims to exploit intense GeV-scale pulsed muon beams for a next-generation measurement at sub-0.1-ppm precision. Together, these programs illustrate the continuing role of precision muon measurements in testing the Standard Model and searching for physics beyond it.
