Distinguishing Higgs models in H -> b b-bar / H -> tau^+ tau^-
Abstract
We analyze the ratio of branching ratios R=BR(H->b b-bar)/BR(H->tau^+ tau^-) of Higgs boson decays as a discriminant quantity between supersymmetric and non-supersymmetric models. This ratio receives large renormalization-scheme independent radiative corrections in supersymmetric models at large \tan\beta, which are absent in the Standard Model or Two-Higgs-doublet models. These corrections are insensitive to the supersymmetric mass scale. A detailed analysis in the effective Lagrangian approach shows that, with a measurement of +-21% accuracy, the Large Hadron Collider can discriminate between models if the CP-odd Higgs boson mass is below 900 GeV. An e+e- Linear Collider at 500 GeV center of mass energy can discriminate supersymmetric models up to a CP-odd Higgs mass of ~ 1.8 TeV.
Keywords
Cite
@article{arxiv.hep-ph/0106027,
title = {Distinguishing Higgs models in H -> b b-bar / H -> tau^+ tau^-},
author = {Jaume Guasch and Wolfgang Hollik and Siannah Penaranda},
journal= {arXiv preprint arXiv:hep-ph/0106027},
year = {2009}
}
Comments
LaTeX, 10 pages, 4 figures. Uses cite.sty. Comments and references added