  Data recorded by the D0 experiment at the Fermilab Tevatron Collider are
analyzed to search for neutral Higgs bosons produced in association with b
quarks. The search is performed in the three-b-quark channel using
multijet-triggered events corresponding to an integrated luminosity of 5.2fb-1.
In the absence of any significant excess above background, limits are set on
the cross section multiplied by the branching ratio in the Higgs boson mass
range 90 to 300 GeV, extending the excluded regions in the parameter space of
the minimal supersymmetric standard model.
