Study of $H/A \to \tau\tau \to e\mu+X$ in CMS

The electron+muon final states from the H/A->tautau decay channel of the neutral MSSM Higgs boson produced in association with b quarks in gg->bbH/A are studied with full simulation in CMS. The associated b jets are used to extract the signal from the background. The discovery potential is ivaluated for 30fb-1 at low luminosity. The effect of systematic uncertainties of the background determination on the discovery reach is discussed.