Search for SM Higgs boson using large missing $E_T$ plus b-jets final state at D{\O}

We report on the search for the Standard Model Higgs Boson produced in association with the $Z$ Boson at the Tevatron $p\bar{p}$ Collider. In particular, we study the $p\bar{p} \rightarrow ZH \rightarrow \nu\nu b \bar{b}$ channel, which is one of the most sensitive in light Higgs Boson searches because of the large $Z\rightarrow \nu \nu$ branching ratio. The analysis starts from a sample of multi-jet events with large missing $E_T$, from where we select events with two b-jets and reconstruct the mass of the system. After properly subtracting the backgrounds, we measure the upper limit for $ZH$ production cross section based on L=260~$\mbox{pb}^{-1}$ of the data.