Associated Higgs plus vector boson test of a fermiophobic Higgs boson
2012
Production in association with an electroweak vector boson $V$ is a distinctive mode of production for a Higgs boson $H$ without tree-level couplings to fermions, known as a fermiophobic Higgs boson. We focus on $HV$ associated production with $H$ decay into a pair of photons, and $V$ into a pair of jets, with the goal of distinguishing a fermiophobic Higgs boson from the standard model Higgs boson. Performing a simulation of the signal and pertinent QCD backgrounds, and using the same event selection cuts employed by the LHC ATLAS Collaboration, we argue that existing LHC data at 7 TeV with $4.9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity may distinguish a fermiophobic Higgs boson from a standard model Higgs boson near 125 GeV at about 1.9 standard deviation signal significance ($1.9\ensuremath{\sigma}$) per experiment. At 8 TeV we show that associated production could yield $2.8\ensuremath{\sigma}$ significance per experiment with $10\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data.
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