Search for the SM Higgs in semi-leptonic $WW$* decays in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV

We present a search for the Standard Model Higgs boson produced via the H$\rightarrow$WW$^{(*)}\rightarrow$l+nu+j+j process at a center-of-mass energy of $\sqrt{s}=1.96$ TeV using up to 5 fb$^{-1}$ of data collected with the D0 detector at the Fermilab Tevatron collider. We search in events with one lepton (electron or muon), two jets and missing transverse energy. A Higgs particle with a mass greater than 140 GeV primarily decays into a pair of $W$ bosons. While the di-lepton channels provide a cleaner signature, the semi-leptonic decay mode has a significantly larger cross section times branching ratio. Procedures used to identify signal-like events and to overcome the large $W$+jets background will be discussed.