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Novel Enhancement of Loop-Induced $H^\pm W^\mp Z^0$ Vertex

Shinya Kanemura
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Abstract

We discuss the non-decoupling effects on the loop-induced $H^\pm W^\mp Z^0$ vertex in the general two Higgs-doublet model. The decay process $H^\pm \to W^\pm Z^0$ is analyzed at one-loop level and possible enhancement of the decay width is explored. We find that a novel enhancement can be realized by the Higgs non-decoupling effects with large mass difference between charged and CP-odd Higgs bosons. The branching ratio of the process can be a few % $\sim$ 10%. Therefore the decay mode may be detectable at LHC or future $e^+e^-$ linear colliders (LC's).

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Shinya Kanemura. 1997-12-19. Novel Enhancement of Loop-Induced $H^\pm W^\mp Z^0$ Vertex. https://arxiv.org/abs/hep-ph/9712450

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