Search for non-Standard Model CP-odd Higgs Boson

We search for a new light non-Standard Model CP-odd Higgs boson, A0, using a data sample of Upsilon(1S), Upsilon(2S), and Upsilon(3S) collected by the BABAR detector at the SLAC PEP-II B-factory. We also search for an undetectable Upsilon(1S) decay recoiling against the dipion system. Our results constrain to the simplest minimal supersymmetric model extension, the next-to-minimal supersymmetric model (NMSSM).