Suppressing Lepton Flavour Violation in a Soft-Wall Extra Dimension

Understand

A soft-wall warped extra dimension allows one to relax the tight constraints imposed by electroweak data in conventional Randall-Sundrum models.

• We investigate a setup, where the lepton flavour structure of the Standard Model is realised by split fermion locations.
• Bulk fermions with general locations are not analytically tractable in a soft-wall background, so we follow a numerical approach to perform the Kaluza-Klein reduction.
• Lepton flavour violation is induced by the exchange of Kaluza-Klein gauge bosons.