Abstract
Composite models of quarks, leptons and Higgs bosons based on softly broken supercolour are both predictive and capable of giving some of the desired mass hierarchies. In the SQCD examples we have explored, however, massive neutrinos ( m ν ∼ m ef) and light spin- 1 2 leptoquarks ( m 1q ⪅ 1 GeV) can only be avoided at the price of introducing further elementary particles (spectators).
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