ASSOCIATED PRODUCTION OF HIGGS BOSONS WITH TBART PAIRS

Associated production of Higgs bosons with top-antitop pairs at hadron colliders, pp --> HttBARX, is examined. By tagging on an isolated secondary lepton, e or mu, from the t or tBAR decay, discovery of an intermediate-mass Higgs boson, m(H) congruent-to 80-150 GeV, via H --> gamma-gamma is rendered feasible at the Superconducting Super Collider (SSC) (square-root s = 40 TeV). Allowing a factor-of-0.4 signal reduction for isolation cuts and selection efficiencies leaves about 21 events per SSC year for m(H) congruent-to 80-130 GeV, and somewhat less for 130-150 GeV, above an anticipated small background. At the CERN Large Hadron Collider (square-root s = 16 TeV), the cross section is reduced by about a factor of 1/8.