Recasting ttZ analyses yields sub-permille constraints on Br(t→H±b)×Br(H±→WZ) and vΔ≲2 GeV in the Y=0 Higgs triplet model, accompanied by a 2σ preference for a non-zero signal.
Precision observables in SU(2) x U(1) models with an additional Higgs triplet
3 Pith papers cite this work. Polarity classification is still indexing.
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abstract
Electroweak precision observables are calculated at complete 1-loop order in the extension of the standard model by an extra Higgs triplet, where the $\rho$-parameter can be different from unity already at the tree level. One additional data point is required for fixing the input parameters. In the on-shell renormalization scheme the leptonic mixing angle $\sin^2\theta_e$ at the $Z$ peak is chosen, together with the conventional input $\alpha, M_Z, G_{\mu}, m_t$. The calculated observables depend on the mass of the doublet Higgs boson $H^0$ and on the masses of the extra non-standard Higgs bosons as free parameters. The predictions of the standard model and the triplet model coincide for all observables in the experimental range of the top mass $m_t=175\pm 6$ GeV. In the triplet model, all observables which show a dependence on the doublet Higgs mass $M_{H^0}$ are consistent with a low value of $M_{H^0}$.
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One-loop corrections in the complex Higgs triplet model shift the 125 GeV Higgs decay rates to WW* and ZZ* upward by a few percent relative to the SM, while allowing up to -20% deviation in gamma gamma and 100% in the self-coupling.
The 152 GeV real triplet Higgs model predicts more triboson events (WWW, WWZ, VVZ) than LHC data show, making it consistent with but not preferred over the Standard Model.
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Searching for a Charged Higgs Boson in Top-Quark Decays via the $WZ$ Mode
Recasting ttZ analyses yields sub-permille constraints on Br(t→H±b)×Br(H±→WZ) and vΔ≲2 GeV in the Y=0 Higgs triplet model, accompanied by a 2σ preference for a non-zero signal.
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Radiative corrections to decays of the 125 GeV Higgs boson in the complex Higgs triplet model
One-loop corrections in the complex Higgs triplet model shift the 125 GeV Higgs decay rates to WW* and ZZ* upward by a few percent relative to the SM, while allowing up to -20% deviation in gamma gamma and 100% in the self-coupling.
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Multi-Lepton Probes of the Drell-Yan Production of Triplet Higgses
The 152 GeV real triplet Higgs model predicts more triboson events (WWW, WWZ, VVZ) than LHC data show, making it consistent with but not preferred over the Standard Model.