Abstract
We re-examine the phenomenology of CP violation in the context of broken supersymmetric theories. We argue that since it is related to the mass counter-terms for fermion fields which vanish in a supersymmetric theory, the non-perturbative vacuum parameter θ is not renormalized and is hence “naturally” small in a theory with spontaneously broken supersymmetry. We argue that the usual estimates of CP violating phenomena in the Kobayashi-Maskawa model are likely to remain valid in such a theory, with the possible exception of the neutron electric dipole moment which may be large if supersymmetry is broken on a scale ⪢ O(100)GeV.
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