A Light Supersymmetric Higgs Sector Hidden by a Standard Model-like Higgs
Abstract
Extending the Higgs sector of the MSSM by triplets alleviates the little hierarchy problem and naturally allows for enhancements in the diphoton decay rate of the lightest CP-even Higgs h. In the present paper we analyze in detail the Higgs phenomenology of this theory with m_h~126 GeV. We mostly focus on a light Higgs sector where the pseudoscalar A, the next-to-lightest CP-even scalar H and the charged H^\pm Higgses are naturally at the electroweak scale. It turns out that for any value m_A > m_h there is a parameter region at small tan(beta) where the CP-even Higgs sector appears at colliders as the SM one, except for loop-induced corrections. Notably the existence of this SM-like point, which is absent in the MSSM, is shared with supersymmetric theories where there are extra singlets. We also highlight a second parameter region at small m_A and small tan(beta) where the h signal strengths, diphoton channel included, are SM-like except those of bottoms and taus which can have at most a 10-15 % splitting. Improvements in the A and H^\pm searches are worthwhile in order to discriminate this scenario from the SM.
Keywords
Cite
@article{arxiv.1303.0800,
title = {A Light Supersymmetric Higgs Sector Hidden by a Standard Model-like Higgs},
author = {Antonio Delgado and Germano Nardini and Mariano Quiros},
journal= {arXiv preprint arXiv:1303.0800},
year = {2013}
}
Comments
24 pages, 6 figures; v2: added references; v3: some comments clarified, Fig.6 improved, version published in JHEP