1207.3699 (Alexandre Alves et al.)

Explaining the Higgs Decays at the LHC with an Extended Electroweak
Model    [PDF]

Alexandre Alves, A. G. Dias, E. Ramirez Barreto, C. A. de S. Pires, Farinaldo S. Queiroz, P. S. Rodrigues da Silva

We show that the recent discovery of a new boson at the LHC, which we assume to be a Higgs boson, and the observed enhancement in its diphoton decays compared to the SM prediction, can be explained by a new doublet of charged vector bosons from an extended electroweak gauge sector model with SU(3)$_C\otimesSU(3)_L\otimesU(1)_X$ symmetry. Our results show a good agreement between our theoretical expected sensitivity to a 126--125 GeV Higgs boson and the experimental significance observed in the diphoton channel at the 8 TeV LHC. Effects of an invisible decay channel for the Higgs boson are also taken into account, in order to anticipate a possible confirmation of deficits in the branching ratios into $ZZ^*$, $WW^*$, bottom quarks, and tau leptons.

View original: http://arxiv.org/abs/1207.3699