  We present the results of a search for standard model Higgs boson production
with decay to WW*, identified through the leptonic final states e+ e- nubar nu
,e mu nubar nu and mu+ mu- nubbar nu. This search uses 360 pb-1 of data
collected from p pbar collisions at sqrt{s} = 1.96 TeV by the upgraded Collider
Detector at Fermilab (CDF II). We observe no signal excess and set 95%
confidence level upper limits on the production cross section times branching
ratio for the Higgs boson to WW* or any new scalar particle with similar decay
products. These upper limits range from 5.5 to 3.2 pb for Higgs boson masses
between 120 and 200 GeV/c2.
