Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-06-10
Nucl.Phys. B544 (1999) 557-575
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages Latex, 9 figures, references added, alterations to text in sections 3 and 5, some graphs changed slightly, to appear
Scientific paper
10.1016/S0550-3213(98)00845-1
We study the decays of Higgs bosons to a lighter Higgs boson and a virtual gauge boson in the context of the non-supersymmetric Two-Higgs-Doublet-Model (2HDM). We consider the phenomenological impact at LEP2 and find that such decays, when open, may be dominant in regions of parameter space and thus affect current Higgs boson search techniques. Three-body decays would be a way of producing light neutral Higgs bosons which have so far escaped detection at LEP due to suppressed couplings to the $Z$, and are of particular importance in the 2HDM (Model I) which allows both a light fermiophobic Higgs and a light charged scalar.
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