Enhanced lepton flavour violation in the supersymmetric inverse seesaw

3rd Symposium on Prospects in the Physics of Discrete Symmetries

Weiland, C.^1

Laboratoire de Physique Théorique, CNRS-UMR 8627, Université Paris Sud 11, F-91405 Orsay Cedex, France^1

关键词: Conversion rates;    Inverse see saws;    Lepton flavour violations;    Parameter spaces;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/447/1/012037/pdf
DOI  :  10.1088/1742-6596/447/1/012037

来源: IOP

【 摘 要 】

In minimal supersymmetric seesaw models, the contribution to lepton flavour violation from Z-penguins is usually negligible. In this study, we consider the supersymmetric inverse seesaw and show that, in this case, the Z-penguin contribution dominates in several lepton flavour violating observables due to the low scale of the inverse seesaw mechanism. Among the observables considered, we find that the most constraining one is the μ-e conversion rate which is already restricting the otherwise allowed parameter space of the model. Moreover, in this framework, the Z-penguins exhibit a non-decoupling behaviour, which has previously been noticed in lepton flavour violating Higgs decays.