Decays $h\to \gamma \gamma ,\gamma Z$ in the Two Higgs Doublet Model Type III

Abstract

We study the enhancement of the branching ratios of the decays $h\to \gamma \gamma ,\gamma Z$ in the Two Higgs Doublet Model Type III, assuming a four-zero Yukawa Texture and a general Higgs potential. We show that these processes are very sensitive to the flavor pattern of the Yukawa texture and the structure of the triple coupling $h{H}^{\pm }{H}^{\mp }$ from the Higgs potential. We can accomodate the parameters of the model such that one can obtain the $h\to \gamma \gamma$ rates reported by the LHC and at the same time we can get a $h\to \gamma Z$ fraction larger than in the SM and within experimental reach. The possibility of obtaining a light charged Higgs boson within the ensuing parameter space and compatible with current experimental measurements is also presented.

Comments: 6 pages, 3 figures, contribution in Prospects for Charged Higgs Discovery at Colliders - CHARGED 2014, version accepted in PoS