Flavor constraints on two-Higgs-doublet models with general diagonal Yukawa couplings

By Farvah Mahmoudi, O. Staal. 2009

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We consider constraints from flavor physics on two-Higgs-doublet models (2HDM) with general, flavor-diagonal, Yukawa couplings. Analyzing the charged Higgs contribution to different observables, we find that b{yields}s{gamma} transitions and {Delta}M{sub B{sub d}} restrict the coupling {lambda}{sub tt} of the top quark (corresponding to cot{beta} in models with a Z{sub 2} symmetry) to |{lambda}{sub tt}| or approx. 300 GeV in models of type II and III, while no lower bound on m{sub H}{sup +} is found for types I and IV.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/16b00de50428234de675a95b3ccaa25a416c88ff