Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-05-06
Phys.Rev.D77:116008,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
revtex, 36 pages, including 8 figures
Scientific paper
10.1103/PhysRevD.77.116008
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 magnetic dipole moment 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.
Feng Tai-fu
Sun Lin
Yang Xiu-Yi
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