Article,

The Muon Anomalous Magnetic Moment: A Harbinger For "New Physics"

, and .
(Feb 12, 2001)

Abstract

QED, Hadronic, and Electroweak Standard Model contributions to the muon anomalous magnetic moment, a\_mu = (g\_mu-2)/2, and their theoretical uncertainties are scrutinized. The status and implications of the recently reported 2.6 sigma experiment vs.theory deviation a\_mu^exp-a\_mu^SM = 426(165) times 10^-11 are discussed. Possible explanations due to supersymmetric loop effects with m\_SUSY 55 sqrttan beta GeV, radiative mass mechanisms at the 1--2 TeV scale and other ``New Physics'' scenarios are examined.

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