Correlation of h→γγ and Zγ in Type-II seesaw neutrino model

We study the charged scalar contributions to the Higgs decay channels of h→γγ and h→Zγ in the Type-II seesaw neutrino model. In most of the allowed parameter space in the model, the new contribution to h→Zγ is positively correlated with that to h→γγ. If the current excess of the h→γγ rate measured by the ATLAS Collaboration persists, the h→Zγ rate should be also larger than the corresponding standard model prediction. We demonstrate that the anti-correlation between h→γγ and h→Zγ only exists in some special region.