Abstract

Nonleptonic weak interactions are studied on the bases of some composite-quark models proposed currently and within the framework of the conventional minimal $\mathrm{SU}{(2)}_{L}\ifmmode\times\else\texttimes\fi{}\mathrm{U}(1)$ gauge theory. One of those models provides a further SU(4)-20 enhancement by a factor of 2 as compared with the conventional Glashow-Iliopoulos-Maiani model.

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