Comparison between the Higgs boson discovery potential of the ATLAS experiment and the Tevatron in the H --> WW(*) channel

The discovery potential for a Standard Model higgs boson in the H --> WW* channel is compared for the ATLAS experiment at the CERN LHC and for the Tevatron ppbar collider. In order to perform a consistent comparison the same fast detector simulation is applied to both experimental scenarios. The signal significance is evaluated using leading order cross sections for both signal and background. Inaddition, it is studied how the signal significance is affected if known K-factors and uncertainties on the background are included.