The Phenomenology of the CP-odd Scalar of Two-Doublet Models

Abstract

We examine the phenomenology of the $CP$-odd scalar $A^0$ of two-Higgs-doublet models. We explore the parameter space determined by triviality bounds and identify the regions where the $A^0$ can be detected at the LHC in each of the following modes: the inclusive two-photon decay mode, the $l^{\pm }\gamma \gamma X$ mode from $t\overline{t}{A}^0$ production and the $A^0\to Zh$ channel with the subsequent decay of the $CP$-even scalar $h$ to two photons. We find that, while the $l^{\pm }\gamma \gamma X$ mode is of limited usefulness, the other two modes can give viable signals in fairly large, and complementary, regions of parameter space.

31 pages, 23 figures available by mail upon request, BU-HEP 94-5

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Cited by in corpus (7)

• Theory and phenomenology of two-Higgs-doublet models
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• Pseudo-axions in Little Higgs models
• Comprehensive study of two Higgs doublet model in light of the new boson with mass around 125 GeV
• Analyzing the CP Nature of a New Scalar Particle via S->Zh Decay
• The decay $A^0\to h^0{Z}^{(\ast )}$ in the inverted hierarchy scenario and its detection prospects at the Large Hadron Collider
• Pseudoscalar neutral Higgs Boson production in polarized (gamma e) collisions