Enhanced $h\rightarrow \gamma \gamma$ rate in MSSM singlet extensions
  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. 
Kai Schmidt-Hoberg, Florian Staub
hep-ph