Screening of electroweak interactions and superweak effects in rare processes

The nature of the principle of diagonality of the electroweak interactions is studied. An approach is developed according to which this principle is a consequence of the horizontal symmetry of the electroweak forces. It is used as the basis for a study of the model of gauge horizontal superweak interactions with symmetry SU(N)/sup H//sub L/ x SU(N)/sup H//sub R/ x SU(2)/sup W//sub L/ x SU(2)/sup W//sub R/ x U(1), where N = 2, 3. This model is used to obtain some numerical estimates of the parameters of rare processes which can be measured experimentally