Radiative corrections to the Higgs boson couplings in the triplet model

Understand

We calculate a full set of one-loop corrections to the Higgs boson coupling constants as well as the electroweak parameters.

• We compute the decay rate of the standard model (SM)-like Higgs boson ($h$) into diphoton.
• Renormalized Higgs couplings with the weak gauge bosons $hVV$ ($V=W$ and $Z$) and the trilinear coupling $hhh$ are also calculated at the one-loop level in the on-shell scheme.
• Magnitudes of the deviations in these quantities are evaluated in the parameter regions where the unitarity and vacuum stability bounds are satisfied and the predicted W boson mass at the one-loop level is consistent with the data.