Higgs decays in the Two Higgs Doublet Model: Large quantum effects in the decoupling regime
High Energy Physics - Phenomenology
2014-02-18 v2
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0307391,
title = {Higgs decays in the Two Higgs Doublet Model: Large quantum effects in the decoupling regime},
author = {A. Arhrib and M. Capdequi Peyranere and W. Hollik and S. Penaranda},
journal= {arXiv preprint arXiv:hep-ph/0307391},
year = {2014}
}
Comments
LaTeX, 13 pages, 5 figures. Improved text, added references, appendix removed. Version to appear in PLB