Ref HAL: hal-00335193_v1
Ref Arxiv: hep-ph/0307391
DOI: 10.1016/j.physletb.2003.10.006
Ref. & Cit.: NASA ADS
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47 citations
Résumé:

We study the Higgs-boson decays h0 -> b \bar{b}, h0 -> \gamma \gamma and h0 -> \gamma Z within the framework of the Two Higgs Doublet Model (THDM) in the context of the decoupling regime, together with tree level unitarity constraints. We show that when the light CP-even Higgs boson of the THDM mimics the Standard-Model Higgs boson, not only the one-loop effects to h0 -> {\gamma \gamma ,\gamma Z} but also the one-loop contribution to h0 -> b \bar{b} can be used to distinguish between THDM and SM. The size of the quantum effects in h0 -> b \bar{b} are of the same order as in h0 -> {\gamma \gamma ,\gamma Z} and can reach 25% in both cases.

Commentaires: LaTeX, 13 pages, 5 figures. Improved text, added references, appendix removed. Version to appear in PLB