A search for the Standard Model Higgs boson decaying to two W bosons with the subsequent decay to a final state containing one lepton, one neutrino, and two jets is presented. The results are based on a data sample corresponding to an integrated luminosity of 5.1~fb$^{-1}$ of proton-proton collisions at \sqrt{s}=8\,\text{Te\hspace{-.08em}V} and collected with the CMS detector at the CERN LHC in 2012. Selections to discriminate between the signal and background events are based on kinematic and topological quantities including the angular spin correlations between the decay products. No evidence for the Higgs boson is found. Using 8~TeV data, we exclude the Standard Model Higgs boson in the mass range 260--460~GeV at 95\% confidence level. When combined with 7~TeV data, the exclusion range expands to 230-480~GeV at 95\% confidence level.

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