Effects of Large CP violating phases on $g_{\m}-2$ in MSSM

TL;DR

This paper investigates how large CP violating phases in the MSSM influence the supersymmetric contributions to the muon's anomalous magnetic moment, revealing significant effects on magnitude and sign within EDM constraints.

Contribution

It provides a comprehensive analysis of CP phases' impact on muon g-2 in MSSM, identifying key phase combinations and their effects under experimental constraints.

Findings

Large CP phases can significantly alter the supersymmetric contribution to muon g-2.

CP phases can change the sign of the supersymmetric electro-weak correction.

The analysis includes chargino and neutralino exchange contributions.

Abstract

Effects of CP violation on the supersymmetric electro-weak correction to the anomalous magnetic moment of the muon are investigated with the most general allowed set of CP violating phases in 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 CP phases. The independent set of such phases is classified. We analyse the effects of the phases under the EDM constraints and show that large CP violating phases can drastically affect the magnitude of the supersymmetric electro-weak contribution to $a_{\mu}$ and may even affect its overall sign.