Inclusive Search for Standard Model Higgs Boson Production in theWWDecay Channel Using the CDF II Detector

We present a search for standard model (SM) Higgs boson production using $p\overline{p}$ collision data at $\sqrt{s}=1.96\mathrm{TeV}$, collected with the CDF II detector and corresponding to an integrated luminosity of $4.8{\mathrm{fb}}^{-1}$. We search for Higgs bosons produced in all processes with a significant production rate and decaying to two $W$ bosons. We find no evidence for SM Higgs boson production and place upper limits at the 95% confidence level on the SM production cross section (${\sigma }_H$) for values of the Higgs boson mass ($m_H$) in the range from 110 to 200 GeV. These limits are the most stringent for $m_H>130\mathrm{GeV}$ and are 1.29 above the predicted value of ${\sigma }_H$ for $m_H=165\mathrm{GeV}$.