Search for the SM Higgs boson in the b-bbar+missing ET channel at CDF We present a search for the Standard Model Higgs boson produced in $p\bar{p}$ collisions at $\sqrt{s}= 1.96$ TeV using approximately 750 pb$^{-1}$ of data collected with the CDF II detector in Run II of the Tevatron. The analysis was optimized for a light Higgs boson produced in association with a Z boson decaying into neutrinos. We selected events with two jets (one of which is required to be tagged as originating from a b-quark) and missing transverse energy. A 95\% C.L. limit was set in the ZH channel as well as in the WH channel, where the lepton from the W boson decay escapes detection.