Loop-inducedCPviolation in the gaugino and Higgsino sectors of supersymmetric theories

We show that the gaugino and Higgsino sectors of supersymmetric theories can naturally acquire observable $\mathrm{CP}$ violation through radiative effects which originate from large $\mathrm{CP}$-violating trilinear couplings of the Higgs bosons to the third-generation scalar quarks. These $\mathrm{CP}$-violating loop effects are not attainable by evolving the supersymmetric renormalization-group equations from a higher unification scale down to the electroweak one. We briefly discuss the phenomenological consequences of such a scenario, and as an example, calculate the two-loop contribution to the neutron electric dipole moment generated by the one-loop chromo-electric dipole moment of the gluino.