Radiative corrections to Higgs couplings with weak gauge bosons in custodial multi-Higgs models

Abstract

We calculate 1-loop radiative corrections to the $hZZ$ and $hWW$ couplings in models with next--to--simplest Higgs sectors satisfying the electroweak $\rho$ parameter equal to 1 at tree level: the Higgs singlet model, the two-Higgs doublet models, and the Georgi-Machacek model. Under theoretical and current experimental constraints, the three models have different correlations between the deviations in the $hZZ$ and $hWW$ couplings from the standard model predictions. In particular, we find for each model predictions with no overlap with the other two models.

5 pages, 1 figure

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• Probing extended Higgs sectors by the synergy between direct searches at the LHC and precision tests at future lepton colliders
• Explaining The CDF-II W-Boson Mass Anomaly in the Georgi-Machacek Extension Models
• CP Violation in a Model with Higgs Triplets
• Some new observations for the Georgi-Machacek scenario with triplet Higgs
• Doubly charged Higgs boson at same-sign lepton colliders
• Positive definiteness constraints of effective scalar potential in Georgi-Machacek Model