(S)quark Masses and Non-Abelian Horizontal Symmetries

Abstract

We present a model of quark and squark masses which is based on a non-Abelian horizontal symmetry. It leads to order of magnitude relations between quark mass ratios and mixing angles and to the successful exact relation $\sin {\theta }_C=\sqrt{\frac{m_d}{m_s}}$ to better than $20\%$ accuracy. The non-Abelian symmetry also ensures the necessary squark degeneracy to suppress FCNC mediated by loops with squarks and gluinos, in the neutral meson systems.

Comments: 9 pages, RU-93-39