Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2012-02-08
Physics
High Energy Physics
High Energy Physics - Phenomenology
New fermiophobic Higgs hint from the LHC announced in Moriond 2012 included, discussion expanded, results unchanged
Scientific paper
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 $WW^*,$ $ZZ^*,$ $Z\gamma$ 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.
Gabrielli Emidio
Mele Barbara
Raidal Martti
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