Effects of largeCPviolating phases ongμ−2in the MSSM

Effects of $\mathrm{CP}$ violation on the supersymmetric electroweak correction to the anomalous magnetic moment of the muon are investigated with the most general allowed set of $\mathrm{CP}$ violating phases in the MSSM. The analysis includes contributions from the chargino and the neutralino exchanges to the muon anomaly. The supersymmetric contributions depend only on specific combinations of $\mathrm{CP}$ phases. We analyze the effects of the phases under the EDM constraints and show that large $\mathrm{CP}$ violating phases can drastically affect the magnitude of the supersymmetric electroweak contribution to $a_{\mu }$ and may even affect its overall sign.