Search for a Intermediate Mass Higgs boson produced via Vector Boson Fusion in the channel H->WW->lnu jj with the ATLAS detector

The discovery potential of a Standard Model Higgs boson of 130-200~GeV produced via the vector boson fusion mechanism and decaying into W pairs is studied in this note. The Ws are detected studying one leptonic and one hadronic decay. This study was performed using ATLFAST to simulate the detector and using the PYTHIA MonteCarlo to generate both the signal and the background events. The most important background is the QCD production of W+jets which was simulated also using the VECBOS parton level MonteCarlo generator interfaced to PYTHIA for the showering and fragmentation of quarks. A signal can be observed after 3 years of data taking at low luminosity in the mass interval considered, providing a complementary evidence to that given by other channels studied for this mass range.