Electron and neutron electric dipole moments in the constrained MSSM - art. no. 073003

We analyze the effects of CP-violating phases on the electric dipole moment (EDM) of the electron and neutron in the constrained minimal supersymmetri c model. We find that the phases phi(mu) and phi(A0) have to be strongly co rrelated, in particular for small values of the SUSY mass parameters. We ca lculate the neutron EDM in two different models, the quark-parton model and the chiral quark model. It turns out that the predictions are quite sensit ive to the model used. We show parameter regions in the M-0-M-1/2 plane whi ch are excluded by considering simultaneously the experimental bounds of bo th electron and neutron EDM, assuming specific values for the phases phi(mu ) and phi(A0). [S0556-2821(99)05617-9].