  In some models of electro-weak interactions the W and Z bosons are considered
composites, made up of spin-one-half subconstituents. In these models a spin
zero counterpart of the W and Z boson naturally appears, whose higher mass can
be attributed to a particular type of hyperfine spin interaction among the
various subconstituents. Recently it has been argued that the scalar state
could be identified with the newly discovered Higgs (H) candidate. Here we use
the known spin splitting between the W/Z and H states to infer, within the
framework of a purely phenomenological model, the relative strength of the
spin-spin interactions. The results are then applied to the lepton sector, and
used to crudely estimate the relevant spin splitting between the two lowest
states. Our calculations in many ways parallels what is done in the SU(6) quark
model, where most of the spin splittings between the lowest lying baryon and
meson states are reasonably well accounted for by a simple color hyperfine
interaction, with constituent (color-dressed) quark masses.
