A New Precise Measurement of the Muon Anomalous Magnetic Moment

The hadronic contributions to the anomalous magnetic moment of the muon

We present a new, completely revised calculation of the muon anomalous magnetic moment, aμ = (gμ − 2)/2, comparing it with the more recent experimental determination of this quantity; this furnishes an important test of theories of strong, weak and electromagnetic interactions. These theoretical and experimental determinations give the very precise numbers,

Disagreement between Standard Model and Experiment for Muon G - 2 ?

In a recent experimental paper reporting a precise measurement of the muon anomalous magnetic moment, Brown et al. claim disagreement of their result with evaluations based on the standard model. This claim is based on comparison with a single theoretical evaluation. It is pointed out that other equally legitimate theoretical evaluations exist in the literature, with which the new experimental ...

The Muon Anomalous Magnetic Moment - Significance of the New Measurement

Intense Muon Physics Working Group Summary

Over many years, the muon has provided important input to the standard model: the value of the weak coupling constant GF , strong proof of the V −A nature of the weak interaction, information on the induced weak pseudoscalar form factor gp, strong contraints on new physics from its anomalous magnetic moment, and sensitive limits on the presence of new physics which would cause lepton flavor vio...

The Muon Anomalous Magnetic Moment and the Standard Model

The muon anomalous magnetic moment measurement, when compared with theory, can be used to test many extensions to the standard model. The most recent measurement made by the Brookhaven E821 Collaboration reduces the uncertainty on the world average of aμ to 0.7 ppm, comparable in precision to theory. This paper describes the experiment and the current theoretical efforts to establish a correct ...