CP violation as a probe of flavor origin in supersymmetry

We address the question of the relation between supersymmetry breaking and the origin of flavor in the context of CP violating phenomena. We prove tha t, in the absence of the Cabibbo-Kobayashi-Maskawa phase, a general Minimal Supersymmetric Standard Model with all possible phases in the soft-breakin g terms, but no new flavor structure beyond the usual Yukawa matrices, can never give a sizeable contribution to epsilon(K).epsilon'/epsilon or hadron ic B-0 CP asymmetries. Observation of supersymmetric contributions to CP as ymmetries in B decays would hint at a non-flavor blind mechanism of supersy mmetry breaking. (C) 2000 Elsevier Science B.V. All rights reserved.