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We study CP violation in a multi-Higgs doublet model based on a $S_3 \timesZ_3$ horizontal symmetry where CKM phase is not the principal source of CPviolation. We consider two mechanisms for CP violation in this model: a) CPviolation due to complex Yukawa couplings; and b) CP violation due toscalar-pseudoscalar Higgs boson mixings. Both mechanisms can explain theobserved CP violation in the neutral Kaon system. $\epsilon'/\epsilon$ due toneutral Higgs boson exchange is small in both mechanisms, but charged Higgsboson con- tributions can be as large as $10^{-3}$ for a), and $10^{-4}$ forb). CP violation in the neutral B system is, however, quite different from theMinimal Standard  Model. The neutron Electric Dipole Moment can be as large as the present ex-perimental bound, and can be used to constrain charged Higgs boson masses.  The electron  EDM is one order of magnitude below the experimental bound in case b) andsmaller in case a).Comment: 22 pages, Revtex, OITS-52

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CP</mml:mi></mml:math>violation in a multi-Higgs-doublet model with flavor-changing neutral currents

CPviolation in a multi-Higgs-doublet model with flavor-changing neutral currents