Electroweak corrections to the muon anomalous magnetic moment

Abstract

The two-loop electroweak radiative corrections to the muon's anomalous magnetic moment, $a_{\mu }\equiv (g_{\mu }-2)/2$, are presented. We obtain an overall 22.6\% reduction in the electroweak contribution $a_{\mu }^{\mathrm{EW}}$ from $195\times 10^{-11}$ to $151(4)\times 10^{-11}$. Implications for the full standard model prediction and an upcoming high precision measurement of $a_{\mu }$ are briefly discussed. Some aspects of the calculations are discussed in detail.

Latex, uses espcrc2. Talk presented at the 1996 Zeuthen Workshop on Elementary Particle Theory, "QCD and QED in Higher Order", Rheinsberg, Germany, April 21-26, 1996. The complete paper, including figures, is also available via anonymous ftp at ftp://www-ttp.physik.uni-karlsruhe.de/ , or via www at http://www-ttp.physik.uni-karlsruhe.de/cgi-bin/preprints/