Search for supersymmetric Higgs bosons in the di-tau decay mode inpp¯collisions ats=1.8 TeV

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Abstract

A search for the direct production of Higgs bosons in the di-tau decay mode is performed with $86.3\ifmmode\pm\else\textpm\fi{}3.5\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ of data collected with the Collider Detector at Fermilab during the 1994--1995 data taking period of the Tevatron. We search for events where one tau decays to an electron plus neutrinos and the other tau decays hadronically. We perform a counting experiment and set limits on the cross section for supersymmetric Higgs boson production where $\mathrm{tan}\ensuremath{\beta}$ is large and ${m}_{A}$ is small. For a benchmark parameter space point where ${m}_{{A}^{0}}=100\text{ }\text{ }\mathrm{GeV}/{c}^{2}$ and $\mathrm{tan}\ensuremath{\beta}=50$, we limit the production cross section multiplied by the branching ratio to be less than 77.9 pb at the 95% confidence level compared to the theoretically predicted value of 11.0 pb. This is the first search for Higgs bosons decaying to tau pairs at a hadron collider.

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