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Has a fermiophobic Higgs boson been detected at the LHC?

Has a fermiophobic Higgs boson been detected at the LHC?

We show that, in the present 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 WW*, ZZ*, Z\gamma, signals are predicted to be somewhat smaller. The excess seen in the CMS exclusive vector-boson-fusion analysis suggests that the LHC sees a fermiophobic instead of a standard-model-like Higgs boson. Due to the different kinematics, a dedicated LHC analysis should be able to discriminate between the two scenarios. If the Higgs boson turns out to be fermiophobic, many of our present ideas of new physics should be revised.

 

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Source: Arxiv.org

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