EFFECTS OF SUPERGRAVITY-INDUCED ELECTROWEAK BREAKING ON RARE B-DECAYS AND MIXINGS

We perform a complete computation of the contributions to b --> s + gamma, b --> sl+ l-, b --> s-nu-nuBAR, b --> s + g, B(d)0-BBAR(d)0 and B(s)0-BBAR(s)0 in minimal spontaneously broken N = 1 supergravity with radiative breaking of the electroweak symmetry group. We compare our results with previous evaluations in non-minimal and minimal supersymmetric models, where the constraint of the SU(2)L x U(1)Y radiative breaking was not imposed. The possibilities of disentangling supersymmetry from the Standard Model in the experimental searches for the above mentioned rare processes are discussed.