We present a search for the standard model Higgs boson
production in association with a W boson in proton-antiproton collisions
(pp̅ →W±H→ℓνbb̅ ) at a center of mass energy of 1.96 TeV. The
search employs data collected with the CDF II detector which correspond
to an integrated luminosity of approximately 2.7 fb-1. We recorded
this data with two kinds of triggers. The first kind required high-pT
charged leptons and the second required both missing transverse energy
and jets. The search selects events consistent with a signature of a
single lepton (e±/μ±), missing transverse energy, and two jets. Jets
corresponding to bottom quarks are identified with a secondary vertex
tagging method and a jet probability tagging method. Kinematic information
is fed in an artificial neural network to improve discrimination between
signal and background. The search finds that both the observed number of
events and the neural network output distributions are consistent with
the standard model background expectations, and sets 95% confidence level
upper limits on the production cross section times branching ratio. The
limits are expressed as a ratio to the standard model production rate. The
limits range from 3.6 (4.3 expected) to 61.1 (43.2 expected) for Higgs
masses from 100 to 150 GeV/c2, respectively.
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Updated: Tuesday, 2012 April 03 14:43:39 CDT automatically from input from Stephanie A Schuler