Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-02-22
Nucl.Phys. B427 (1994) 575-613
Physics
High Energy Physics
High Energy Physics - Phenomenology
31 pages, 23 figures available by mail upon request, BU-HEP 94-5
Scientific paper
10.1016/0550-3213(94)90641-6
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 $A^0\rightarrow Zh$ 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.
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