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.

Comments: 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/