Higgs boson at the Fermilab Tevatron in extended supersymmetric models

Supersymmetric models with an additional singlet field offer the Higgs boson the possibility to decay to two pseudoscalars, a. If the mass of these pseudoscalars is above the b (b) over bar threshold, a -> b (b) over bar is generically the dominant decay mode. The decay h -> aa -> b (b) over barb (b) over bar may be seen above backgrounds at the Tevatron if the Higgs production cross section is enhanced relative to that of the standard model.