English

Has a fermiophobic Higgs boson been detected at the LHC?

High Energy Physics - Phenomenology 2015-06-04 v2 High Energy Physics - Experiment

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 γγ\gamma\gamma, while the WW,WW^*, ZZ,ZZ^*, ZγZ\gamma signal yields are predicted to be somewhat smaller. The excess seen in the ATLAS and CMS fermiophobic Higgs boson searches in γγ\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.

Keywords

Cite

@article{arxiv.1202.1796,
  title  = {Has a fermiophobic Higgs boson been detected at the LHC?},
  author = {Emidio Gabrielli and Barbara Mele and Martti Raidal},
  journal= {arXiv preprint arXiv:1202.1796},
  year   = {2015}
}

Comments

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