VACUUM FINE-TUNING AND EMPIRICAL ESTIMATES OF THE MASSES OF THE TOP-QUARK AND THE HIGGS-BOSON

Fine-tuning principles are analyzed in the search for predictions of m asses of the top quark and the Higgs boson. The modification of the Ve ltman condition, based on the hypothesis of the compensation between t he fermion and boson vacuum energies within the Standard Model multipl ets, is proposed. The requirement of the stability under rescaling and the requirement of the minimum physical vacuum expectation value (VEV ) for the Higgs field have been added to this hypothesis (zero anomalo us dimension). Equations are obtained with regard to these requirement s. The solution of these equations for the top quark and Higgs-boson c oupling constants exists for the cutoff LAMBDA almost-equal-to 2.3 x 1 0(13) GeV and yields the low-energy values m(t) = 151 +/- 4 GeV and m( H) = 195 +/- 7 GeV.