Searches for the standard model Higgs boson decaying into b quarks and produced in association with either vector bosons or top quark pairs are performed in proton-proton collisions with the CMS detector at the LHC. A search for neutral Higgs bosons decaying into b quarks and produced in association with at least one additional b quark is also performed. This mode is expected to be particularly sensitive to Higgs bosons in MSSM scenarios with large values of the parameter tan . -1 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 Entries / 0.06 -1 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 Data/MC 0.5 1 1.5 2 MC uncert. (stat. + syst.) MC uncert. (stat.) = 0.991 s = 0.609 K 2 ν χ