1206.6497 (Asmaa Abada et al.)

Enhancing lepton flavour violation in the supersymmetric inverse seesaw
beyond the dipole contribution    [PDF]

Asmaa Abada, Debottam Das, Avelino Vicente, Cédric Weiland

In minimal supersymmetric models the $Z$-penguin usually provides sub-dominant contributions to charged lepton flavour violating observables. In this study, we consider the supersymmetric inverse seesaw in which the non-minimal particle content allows for dominant contributions of the $Z$-penguin to several lepton flavour violating observables. In particular, and due to the low-scale (TeV) seesaw, the penguin contribution to, for instance, $\Br(\mu \to 3e)$ and $\mu-e$ conversion in nuclei, allows to render some of these observables within future sensitivity reach. Moreover, we show that in this framework, the $Z$-penguin exhibits the same non-decoupling behaviour which had previously been identified in flavour violating Higgs decays in the Minimal Supersymmetric Standard Model.

View original: http://arxiv.org/abs/1206.6497