Search for Charged Higgs Boson Decays of the Top Quark using Hadronic Decays of the Tau Lepton

This Letter describes a direct search for charged Higgs boson production in pp̄ collisions at √s0ex0ex=0ex0ex1.8TeV recorded by the Collider Detector at Fermilab. Two-Higgs-double extensions to the standard model predict the existence of charged Higgs bosons (H^±). In such models, the branching fraction for top quarks B(t→H⁺b→τ⁺νb) can be large. This search uses the hadronic decays of the tau lepton in this channel to significantly extend previous limits on H^± production.