Phenomenology of light Higgs bosons in supersymmetric leftright models
Abstract
We carry out a detailed analysis of the light Higgs bosons in supersymmetric leftright models (SLRM). This includes models with minimal particle content and those with additional Higgs superfields. We also consider models with nonrenormalizable higherdimensional terms. We obtain an upper bound on the mass of the lightest CPeven neutral Higgs boson in these models. The upper bound depends only on the gauge couplings, and the vacuum expectation values of those neutral Higgs fields which control the spontaneous breakdown of the $SU(2)_L \times U(1)_Y$ gauge symmetry. We calculate the oneloop radiative corrections to this upper bound, and evaluate it numerically in the minimal version of the supersymmetric leftright model. We consider the couplings of this lightest CPeven Higgs boson to the fermions, and show that in a phenomenologically viable model the branching ratios are similar to the corresponding branching ratios in the minimal supersymmetric standard model (MSSM). We then study the most promising particle for distinguishing the SLRM from other models, namely the doubly charged Higgs boson. We obtain the mass of this doubly charged Higgs boson in different types of supersymmetric leftright models, and discuss its phenomenology.
 Publication:

arXiv eprints
 Pub Date:
 April 1999
 arXiv:
 arXiv:hepph/9904388
 Bibcode:
 1999hep.ph....4388H
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 29 pages, 4 figures