Collider discovery limits for supersymmetric Higgs bosons

The prospects for discovery of the five Higgs bosons of the minimal supersymmetric standard model are assessed for existing and planned future colliders, including the CERN $e^{+}{e}^{-}$ colliders LEP I and LEP II, the Large Hadron Collider, and the Superconducting Super Collider. As a benchmark for comparisons, we take a top-quark mass $m_t=150\mathrm{}$ GeV and squark mass parameter $\tilde{m}=1\mathrm{}$ TeV in evaluating one-loop radiative corrections; some results for other $m_t$ values are also given. Searches based on the most promising production and decay channels are taken into account. For large regions in parameter space, detectable signals are predicted for one or more of the Higgs bosons, but there remains a region for which no signals would be visible at the above colliders.