Tight limits are derived on models with extended Higgs sectors, including the minimal supersymmetric standard model (MSSM), by exploiting the data on ${\tau }^{+}{\tau }^{-}+2\mathrm{}$ jets final states, used by the CDF Collaboration to place limits on third generation leptoquarks. The main observation here is that both leptoquark production and associated $b\overline{b}$ Higgs production can lead to $b\overline{b}{\tau }^{+}{\tau }^{-}$ final states. For the MSSM we find that $\mathrm{CP}$-odd neutral Higgs boson masses up to 190 GeV are excluded if the ratio of vacuum expectation values $\tan \beta$ is 50.

• Received 29 December 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.2047