Enhanced $h\rightarrow \gamma \gamma$ rate in MSSM singlet extensions
High Energy Physics - Phenomenology
2012-11-02 v2
Abstract
We study the di-photon rate in Higgs decays within singlet extensions of the supersymmetric standard model. In particular we point out that light charginos as well as a light charged Higgs can significantly contribute to the corresponding partial decay width, allowing for an explanation of the experimental indication whithin a natural supersymmetric model. This is in contrast to the `light stau scenario' proposed within the framework of the MSSM which requires a large amount of electroweak fine tuning.
Keywords
Cite
@article{arxiv.1208.1683,
title = {Enhanced $h\rightarrow \gamma \gamma$ rate in MSSM singlet extensions},
author = {Kai Schmidt-Hoberg and Florian Staub},
journal= {arXiv preprint arXiv:1208.1683},
year = {2012}
}
Comments
19 pages, 8 figures; v2: added discussion on constraints from $b\to s\gamma$ and $\delta c{r}ho$. Matches version accepted by JHEP