TOP-QUARK AND HIGGS-BOSON MASSES IN DYNAMICAL SYMMETRY-BREAKING

A model for composite electroweak bosons is reexamined to establish approximate ranges for the initial predictions of the top quark and Higgs boson masses. Higher order corrections to this four-fermion theory at high mass scale, where the theory is matched to the standard model, have little effect, as do wide variations in this scale. However, including all one loop evolution and defining the masses self-consistently, at their respective poles, shifts the top quark and Higgs boson masses somewhat from the earlier calculated positions. These masses exhibit a moderate dependence on the measured strong coupling: for example, with alpha(S)(m(W)) = 0.115(0.125), one finds m(t) similar to 180(185) GeV and m(H) similar to 130(135) GeV.