Two-loop supersymmetric corrections to lepton anomalous dipole moments in split supersymmetry scenarios

Abstract

An analysis of electroweak corrections to the anomalous dipole moments of lepton from some special two-loop diagrams where a closed neutralino/chargino loop is inserted into relevant one-loop diagrams of the standard model is presented in the split supersymmetry scenarios. Considering the translational invariance of the inner loop momenta and the electromagnetic gauge invariance, we get all dimension-6 operators and their coefficients. After applying equations of motion to the external leptons, we obtain the anomalous dipole moments of lepton. The numerical results imply that there is parameter space where the contribution to the muon anomalous MDM from this sector is perhaps significant, and the contribution to the electron electric dipole moment from this sector is sizable enough to be observed in next-generation experiments.