A search for a narrow Higgs boson resonance in the diphoton
mass spectrum is presented based on data corresponding to 10 fb-1 of
integrated luminosity from proton-antiproton collisions at s**(1/2) =
1.96 TeV collected by the CDF experiment. In addition to searching for
a resonance in the diphoton mass spectrum, we employ a multivariate
discriminant technique for the first time in this channel at CDF. No
evidence of signal is observed, and upper limits are set on the cross
section times branching ratio of the resonant state as a function of Higgs
boson mass. The limits are interpreted in the context of the standard
model with an expected (observed) limit on the cross section times
branching ratio of 9.9 (17.0) times the standard model prediction at the
95% credibility level for a Higgs boson mass of 125 GeV/c2. Moreover,
a Higgs boson with suppressed couplings to fermions is excluded for
masses below 114 GeV/c2 at the 95% credibility level.
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Updated: Monday, 2013 February 11 15:24:46 CST automatically from input from Barbara Hehner