Stringent new Bounds on supersymmetric Higgs bosons from existing tevatron data

Abstract

Tight limits are derived on models with extended Higgs sectors, including the Minimal Supersymmetric Standard Model (MSSM), by exploiting the data on τ⁺τ⁻+ 2 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 bb̅ Higgs production can lead to bb̅τ⁺τ⁻ final states. For the MSSM we find that CP-odd neutral Higgs boson masses up to 190 GeV are excluded if the ratio of vacuum expectation values tanβ is 50.