Fermion mass matrix, horizontal CP violation, and natural flavor conservation in electroweak theories with horizontal flavor chirality

We show that with minimal Higgs systems both the SU(2)/sub L/ x U(1)/sub Y/ x SU(3)/sub H//sup V//sup L/ and the SU(2)/sub L/ x SU(2)/sub R/ x U(1)/sub B//sub -//sub L/ x SU(3)/sup V//sup L//sub H/ theories establish the canonical mass matrices for both up- and down-type quarks. Interestingly, the latter, unlike the former, yields spontaneous CP violation in the horizontal interactions exclusively with superweak coupling G/sub H/≅10/sup -8/G/sub F/. Furthermore, the latter suggests the top-quark mass in the range 69approx. <m/sub t/approx. <110 GeV