Speaker
Description
The Fermilab Muon g-2 experiment has measured the muon's anomalous magnetic moment (a_μ) with a precision of 139 ppb, based on Run-456 dataset collected from 2020 to 2023. The new result confirms the earlier Run1 and Run2-3 measurements while significantly reducing overall uncertainty through improved systematic controls and using over 2.5 times more positron statistics than before. The combined Fermilab measurement yields a value of a_μ(exp, FNAL)=1165920705(148)×10⁻¹²(127 ppb), improving the experimental precision on the world average value by more than a factor of four. This talk will highlight the final dataset’s analysis methods and systematic control strategies, include a comparison with the latest Standard Model prediction, and finally offer a brief outlook on the Muon g-2/EDM experiment planned at J-PARC.
