Dynamical symmetry breaking and the top quark mass in the minimal supersymmetric standard model

The minimal supersymmetric extension of the standard model is studied, when the electroweak symmetry breakdown relies on the formation of condensates involving the third generation of quarks and their supersymmetric partners. The top quark mass is obtained as a function of the compositeness scale Λ and the soft supersymmetry breaking scale, Δ S . The dependence of the top quark mass on the ration of the Higgs vacuum expectation values, as well as a function of the lightest Higgs mass, is analyzed. We show that, when Λ ≅ 10 16 GeV, the characteristics top quark mass in this model is 140 GeV ⩽ m t ⩽ 195 Gev, a prediction that is only slightly dependent on the value of Δ S .