NON-UNIFIED SPARTICLE AND PARTICLE MASSES IN UNIFIED THEORIES.
arXiv:hep-ph/9502397 · doi:10.1016/0370-2693(95)00570-B
Abstract
We give examples of minimal extensions of the simplest SU(5) SUSY-GUT in which all squarks and sleptons of a family have different tree level masses at the unification scale. This phenomenon is general; it occurs when the quarks and leptons are the light remnants of a theory which contains extra heavy families at the unification scale. The examples have interesting relations between Yukawa couplings: In one model the ratio of the top to bottom Yukawas is as large as , partly accounting for the large . Another gives between 2/3 and 1; this relaxes the strict bounds on the top mass and neutrino properties that come from -- unification. Still another allows to be between 1/6 and 1 and evades the potentially problematic GUT relation of . The final example has horizontal sparticle splittings in spite of the existence of horizontal symmetries.
10 pages, Latex, 2 figures (tarred+compressed+uuencoded).
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