Three-body decays of Higgs bosons at LEP2 and application to a hidden fermiophobic Higgs |
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| Institution: | 1. Department of Physics and Astronomy, University of Iowa, 203 Van Allen Hall, Iowa City, IO 52242-1479, USA;2. Laboratory of Particle Physicsand Cosmology, École polytechnique fédérale de Lausanne, BSP 730, Rte de la Sorge, CH-1015 Lausanne, Switzerland;3. Physics Department, Brookhaven National Laboratory, Upton, NY 11793, USA;1. Institute of Physics, Jan Kochanowski University, PL-25406 Kielce, Poland;2. The H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Kraków, Poland;3. Department of Physics, Kent State University, Kent, OH 44242, USA |
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| Abstract: | 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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