PRECISE DETERMINATION OF THE TOP QUARK AND HIGGS MASSES IN THE REDUCED STANDARD THEORY FOR ELECTROWEAK AND STRONG-INTERACTIONS

Using the latest experimental data, we recalculate the top quark and Higgs masses, m(t) and m(h), on the basis of the reduction of coupling constants in the standard theory for electroweak and strong interactions. The reduced standard theory predicts m(t) = 99.2 +/- 5.7 GeV and m(h) = 64.6 +/- 0.9 GeV, where the uncertainty mostly originates from that of the QCD coupling constant.