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Electron and Neutron Electric Dipole Moments in the Constrained MSSM

A. Bartl·T. Gajdosik·W. Porod·P. Stockinger·H. Stremnitzer
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Abstract

We analyze the effects of CP-violating phases on the electric dipole moment (EDM) of electron and neutron in the constrained minimal supersymmetric model. We find that the phases phi_μ and phi_{A_0} have to be strongly correlated, in particular for small values of the SUSY mass parameters. We calculate the neutron EDM in two different models, the Quark-Parton Model and the Chiral Quark Model. It turns out that the predictions are quite sensitive to the model used. We show parameter regions in the M_0-M_1/2 plane which are excluded by considering simultaneously the experimental bounds of both electron and neutron EDM, assuming specific values for the phases phi_μ and phi_{A_0}.

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A. Bartl, T. Gajdosik, W. Porod, P. Stockinger, H. Stremnitzer. 1999-03-18. Electron and Neutron Electric Dipole Moments in the Constrained MSSM. https://doi.org/10.1103/physrevd.60.073003

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