Abstract
We find a hidden local symmetry in the supersymmetric U(4 n f +2)/ U(4 n f )× SU(2) non-linear sigma model which was proposed recently as a phenomelogical model coming from the SU(2) preon theory. The hidden symmetry is identifiable with the standard electro-weak SU(2) L gauge symmetry and thus we suggest that the weak intermediate bosons discovered at CERN may be dynamical gauge fields of the hidden symmetry.
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