ANOMALOUS MAGNETIC-MOMENT OF THE MUON AND HIGGS-MEDIATED FLAVOR-CHANGING NEUTRAL CURRENTS - ART. NO. 097701

In the two-Higgs doublet extension of the standard model, flavor-chang ing neutral couplings arise naturally. In the lepton sector, the large st such coupling is expected to be mu - tau - phi. We consider the eff ects of this coupling on the anomalous magnetic moment of the muon. Th e resulting bound on the coupling, unlike previous bounds, is independ ent of the value of other unknown couplings. It will be significantly improved by the upcoming E821 experiment at Brookhaven National Labora tory. [S0556-2821(98)02521-1].