The anomalous magnetic moment of the muon in the MSSM - recent developments

TL;DR

This paper reviews recent two-loop supersymmetric contributions to the muon's anomalous magnetic moment, highlighting their potential to explain experimental deviations and dependence on unknown parameters.

Contribution

It provides new calculations of two-loop supersymmetric effects on (g-2)_mu, emphasizing their significance and parameter sensitivities.

Findings

Two-loop diagrams can contribute up to 5*10^{-10} to (g-2)_mu

Contributions are close to current experimental uncertainty

Dependence on unknown SUSY parameters affects predictions

Abstract

We present recent results of two interesting classes of supersymmetric two-loop contributions to (g-2)_mu. Two-loop diagrams involving either a closed sfermion loop or a closed chargino/neutralino loop can amount to 5*10^{-10}, which is almost one standard deviation of the current experimental uncertainty. We discuss the dependence of these two classes on the unknown supersymmetric parameters and their impact on the supersymmetric prediction of (g-2)_mu.