The Muon g-2 in the Standard Model

摘要

The Standard Model prediction of the anomalous magnetic moment of the muon is reviewed. QED, electroweak and hadronic contributions are presented, and open questions discussed. Schwinger's 1948 calculation [1] of the leading contribution of the Standard Model (SM) prediction for the anomalous magnetic moment of the muon αμ≡(gμ-2)/2, equal to the one of the electron, was one of the very first results of QED. Its agreement with the experimental value of the anomalous magnetic moment of the electron, ae, provided one of the early confirmations of this theory.