SEARCHING FOR A HEAVY HIGGS-BOSON VIA THE H-]LVJJ DECAY MODE AT THE CERN LHC

The discovery of a heavy Higgs boson with a mass up to m(H) = 1 TeV at the CERN LHC is possible in the H-->W+W--->lvjj decay mode. The weak boson scattering signal and backgrounds from t (t) over bar jj and fro m W+jets production are analyzed with parton level Monte Carlo program s which are built on full tree level amplitudes for all subprocesses. The use of double jet tagging and the reconstruction of the W invarian t mass reduce the combined backgrounds to the same level as the Higgs signal. A central mini-jet veto, which distinguishes the different glu on radiation patterns of the hard processes, further improves the sign al to background ratio to about 2.5:1, with a signal cross section of 1 fb. The jet energy asymmetry of the W-->jj decay will give a clear s ignature of the longitudinal polarization of the Ws in the final event sample.