Dynamical basis for spin-1/2 as well as generation stability of leptons and quarks

A three-way preon interaction with a spin-dependence of the form sigmasub(μν)sup((1)) sigmasub(νlambda)sup((2)) sigmasub(lambdaμ)sup((3)), is proposed for a two-flavor (t, v) preon model, within a Bethe-Salpeter framework. This mechanism not only eliminates all S = 3/2 states but severely restricts the spatial symmetries of allowed S = 1/2 states to at most three distinct 'generations' with very strong selection rules forbidding transitions among them. (orig.)