Heavy higgs search with hadron supercolliders up to √s=200 TeV

Summary  In addition to a light Higgs (M h≈0.1 TeV) a heavy one is expected (M H≈1 TeV). The knowledge of the two Higgs masses allows to predict the masses of as many as thirty sparticles expected in the simplest Supergravity theory. The production of a heavy Higgs (M H≫2M Z) is studied via Monte Carlo at three hadron supercollider energies: √s=16 TeV (LHC), √s=40 TeV (SSC) and √s=200 TeV (ELN/Eloisatron), for three masses:M H=500, 750, 1000 GeV. The 4-muon decay mode is investigated, in the presence of the «irreducible» background. The collider energy becomes a crucial parameter for the Higgs discovery as the Higgs mass increases. For a Higgs as heavy as 1 TeV the winning parameter is energy, not luminosity.