H. Cárdenas, A. C. B. Machado, V. Pleitez, J. -Alexis Rodriguez
We consider a three Higgs doublet model with an $S_3$ symmetry in which beside the SM-like doublet there are two fermiophobic doublets. Due to the new charged scalars there is an enhancement in the two-photon decay while the other channels have the same decay widths that the SM neutral Higgs. The fermiophobic scalars are mass degenerated unless soft terms breaking the $S_3$ symmetry are added.
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http://arxiv.org/abs/1212.1665
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