Higgs boson decays in the Complex MSSM

Details Higgs boson decays in the Complex MSSM Higgs boson decays in the Complex MSSM

2007-10-29

arxiv.org/abs/0710.5331v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, submitted for the SUSY07 proceedings, minor corrections

Scientific paper

The analysis of the Higgs search results at LEP showed that a part of the MSSM parameter space with non-zero complex phases could not be excluded, where the lightest neutral Higgs boson, h_1, has a mass of only about 45 GeV and the second lightest neutral Higgs boson, h_2, has a sizable branching fraction into a pair of h_1 states. Full one-loop results for the Higgs cascade decay h_2 --> h_1 h_1 are presented and combined with two-loop Higgs propagator corrections taken from the program FeynHiggs. Using the improved theoretical prediction to analyse the limits on topological cross sections obtained at LEP, the existence of an unexcluded region at low Higgs mass is confirmed. The effect of the genuine vertex corrections on the size and shape of this region is discussed.

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