Triple Higgs Coupling Effect On H(0)-> Bb And H(0)-> Tau(+)Tau(-) In The 2hdm

We study the one-loop electroweak radiative corrections to h(0) bb and h(0)-> b(b)over-bar h(0) -> tau(+) tau(-) in the framework of two Higgs doublet Model (2HDM). We evaluate the deviation of these couplings from their StandardModel (SM) values. h(0)-> bb and h(0) -> tau(+) tau(-) may receives large contribution from triple Higgs couplingsh(0)H(0)H(0), H(0)h(0)h(0), h(0)A(0)A(0) and h(0)H(+)H(-)which are absent in the Standard Model. It is found that in 2HDM, these corrections could be significant and may reach more than 12% for not tow heavy H-0 or A(0) or H+ . We also study the ratio of branching ratios R = BR(h(0)-> b(b)over-bar )/BR(h(0)-> tau(+) tau(-)) of Higgs boson decays which could be used to disentangle SM from other models such as 2HDM. (c) 2017 The Authors. Published by Elsevier B.V.