Enhanced lepton flavour violation in the supersymmetric inverse seesaw

Abstract

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 muon to electron 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.

8 pages, 4 figures, Proceedings of Discrete 2012, Published under licence in Journal of Physics: Conference Series (JPCS) by IOP Publishing Ltd, v2 includes a preprint number

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Cited by in corpus (1)

• Search for a heavy neutral Higgs boson in a left-right model with an inverse seesaw mechanism at the LHC