Has a fermiophobic Higgs boson been detected at the LHC?

Abstract

We show that, in the present inclusive searches for the Higgs boson at the LHC, a fermiophobic Higgs mimics the standard-model-like Higgs if its mass is around 125 GeV. For that mass the order-of-magnitude reduction of fermiophobic Higgs production cross sections is compensated by a corresponding increase in the Higgs branching fraction into $\gamma \gamma$, while the $W{W}^{\ast },$ $Z{Z}^{\ast },$ $Z\gamma$ signal yields are predicted to be somewhat smaller. The excess seen in the ATLAS and CMS fermiophobic Higgs boson searches in $\gamma \gamma$ channel, including the exclusive vector-boson-fusion analysis, suggests that the LHC sees a fermiophobic instead of a standard-model-like Higgs boson. If the Higgs boson turns out to be fermiophobic, many of our present ideas of new physics should be revised.

New fermiophobic Higgs hint from the LHC announced in Moriond 2012 included, discussion expanded, results unchanged

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Cited by in corpus (19)

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• Status of low energy SUSY models confronted with the LHC 125 GeV Higgs data
• Global Analysis of Experimental Constraints on a Possible Higgs-Like Particle with Mass ~ 125 GeV
• Exclusive Signals of an Extended Higgs Sector
• Determining Higgs couplings with a model-independent analysis of h ->gamma gamma
• Resonance at 125 GeV: Higgs or Dilaton/Radion?
• The SM extension with color-octet scalars: diphoton enhancement and global fit of LHC Higgs data
• Higgs decay to dark matter in low energy SUSY: is it detectable at the LHC ?
• Constraints on the Universal Varying Yukawa Couplings: from SM-like to Fermiophobic
• Distinguishing Various Models of the 125 GeV Boson in Vector Boson Fusion
• Fermiophobic light Higgs boson in the type-I two-Higgs-doublet model
• Higgs phenomenology in the Stealth Doublet Model
• Spin Determination for Fermiophobic Bosons
• Off-diagonal terms in Yukawa textures of the Type-III 2-Higgs doublet model and light charged Higgs boson phenomenology
• Has A 125 GeV Pseudoscalar Resonance Been Observed at the LHC?