Impact of a four-zero Yukawa texture on $h\to \gamma \gamma$ and $\gamma Z$ in the framework of the Two Higgs Doublet Model Type III

Abstract

We study the substantial enhancement, with respect to the corresponding Standard Model rates, that can be obtained for the branching ratios of the decay channels $h\to \gamma \gamma$ and $h\to \gamma Z$ within the framework of 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 entering the Yukawa texture and to the triple coupling structure of the Higgs potential, both of which impact onto the aforementioned decays. We can accommodate the parameters of the model in such a way to obtain the $h\to \gamma \gamma$ rates reported by the Large Hadron Collider and at the same time we get a $h\to \gamma Z$ fraction much larger than in the Standard Model, indeed within experimental reach. We present some scenarios where this phenomenology is realized for spectrum configurations that are consistent with current constraints. We also discuss the possibility of obtaining a light charged Higgs boson compatible with all such measurements, thereby serving the purpose of providing a hallmark signal of the scenario considered.

26 pages, 13 figures. Version accepted for publication in JHEP

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Cited by in corpus (11)

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• Flavor violating signatures of lighter and heavier Higgs bosons within the Two Higgs Doublet Model Type-III at the LHeC
• Leptogenesis, radiative neutrino masses and inert Higgs triplet dark matter
• Light neutral CP-even Higgs boson within Next-to-Minimal Supersymmetric Standard model (NMSSM) at the Large Hadron electron Collider (LHeC)
• SM Higgs boson and $t\to cZ$ decays in the 2HDM type III with CP violation
• Charged Higgs boson production via $cb-$fusion at the Large Hadron Collider
• Sensitivity of the decay $h\to Z{Z}^{\ast }\to Zl+l-$ to the Higgs self coupling through radiative corrections
• One-loop decays $A^0\to ZZ,Z\gamma ,\gamma \gamma$ within the 2HDM and its search at the LHC
• Light charged Higgs boson production at the Large Hadron electron Collider
• Analysis of the quark sector in the 2HDM-III with a four-zero Yukawa texture using the most recent data on the CKM matrix
• Flavor violating signatures of neutral Higgs bosons at the LHeC