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.
The $H^\pm W^\mp Z^0$ vertex and single charged Higgs boson production via $WZ$ fusion at the Large Hadron Collider
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abstract
There is a variety of new physics scenarios which deduce extended Higgs sectors in the low energy effective theory. The coupling of a singly-charged Higgs boson ($H^\pm$) with weak gauge bosons, $H^\pm W^\mp Z^0$, directly depends on the global symmetry structure of the model, so that its experimental determination can be useful to test each scenario. We discuss predictions on this coupling in several models, such as the model with additional real and complex triplets, the Littlest Higgs model, the two Higgs doublet model and the minimal supersymmetric standard model. In order to measure the $H^\pm W^\mp Z^0$ coupling we consider single $H^\pm$ production via the $WZ$ fusion mechanism at the CERN Large Hadron Collider. The production rate is hierarchically different among these models, so that this process can be useful to explore new physics scenarios.
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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.
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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.