Leptonic Flavor Structure in the Brane Shifted Extra Dimensional Seesaw Mechanism

Abstract

We discuss the leptonic flavor structure generated by a brane shifted extra dimensional seesaw model with a single right handed neutrino in the bulk. In contrast to previous works, no unitarity approximation for the $3\times 3$ submatrix has been employed. This allows to study phenomenological signatures such as lepton flavor violating decays. A strong prediction of the model, assuming CP conservation, are the ratios of flavor violating charged lepton decay and Z decay branching ratios which are correlated with the neutrino mixing angles and the neutrino mass hierarchy. Furthermore, it is possible to obtain branching ratios for $\mu \to e\gamma$ close to the experimental bounds even with Yukawa couplings of order one.

13 pages plus appendix and references, 4 figures. v2: version accepted by EPJC

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Cited by in corpus (2)

• Dark Matter from Freeze-In via the Neutrino Portal
• Extra dimensions with light and heavy neutral leptons: An application to CE$\nu$NS