One-loop contributions for A0 → ℓℓV with ℓ ≡ e, μ and V ≡ γ, Z in higgs extensions of the standard model

Abstract

We present one-loop formulas for the decay of CP-odd Higgs $A^0 \rightarrow \ell \bar{\ell } V$ with ℓ ≡ e, μ and V ≡ γ, Z in Higgs Extensions of the Standard Model, considering two higgs doublet model with an extra complex (and real) scalar, two higgs doublet model as well as triplet higgs model. Analytic results for one-loop amplitudes are expressed in terms of the basic Passarino-Veltman functions following the standard notations of LoopTools. As a result, physical results can be generated numerically by using the package. In phenomenological results, the total decay widths and the differential decay rates with respect to the invariant mass of lepton pair are analyzed for two typical models such as two higgs doublet model and triplet higgs model.