STRINGENT NEW BOUNDS ON SUPERSYMMETRIC HIGGS BOSONS FROM EXISTING TEVATRON DATA

Tight limits are derived on models with extended Higgs sectors, includ ing the minimal supersymmetric standard model (MSSM), by exploiting th e data on tau(+)tau(-) + 2 jets final states, used by the CDF Collabor ation to place limits on third generation leptoquarks. The main observ ation here is that both leptoquark production and associated <b(b)over bar> Higgs production can lead to <b(b)over bar>tau(+)tau(-) final st ates. For the MSSM we find that CP-odd neutral Higgs boson masses up t o 190 GeV are excluded if the ratio of vacuum expectation values tan b eta is 50.