Higgs at the 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 bbar threshold, a -> b bbar is generically the dominant decay mode. The decay h -> a a -> b bbar b bbar may be seen above backgrounds at the Tevatron if the Higgs production cross section is enhanced relative to that of the standard model. 
Tim Stelzer, Soren Wiesenfeldt, and Scott Willenbrock (U. of Illinois   at Urbana-Champaign)