Feasibility of searches for a Higgs boson using H→W⁺W^-→l⁺l^- + missing p_T and high p_T jets at the Fermilab Tevatron

The sensitivity of standard model Higgs boson searches at the Tevatron experiments with a mass 135<M_H<190  GeV/c² using the channel H→W⁺W^-→l⁺l^-p̸_T(l=e,μ) is discussed. Three new event selections involving Higgs in association with one or two high P_T hadronic jets are discussed. Using leading order matrix elements and a conservative cut-based analysis a 95% confidence level exclusion on σ×B(H→W⁺W^-), 1.6 times larger than that predicted by the standard model for M_H=165  GeV/c², may be achieved with 5  fb^-1 of integrated luminosity. By combining these three event selections with the existing analysis, the sensitivity of CDF and D0 could improve significantly.