Atkind, Michael and Huber, Stephan J (2010) Suppressing lepton flavor violation in a soft-wall extra dimension. Physical Review D, 82 (5). 056007. ISSN 1050-2947

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Abstract

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 flavor structure of the standard model is realized 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 flavor violation is induced by the exchange of Kaluza-Klein gauge bosons. We find that rates for processes such as muon-electron conversion are significantly reduced compared to hard-wall models, allowing for a Kaluza-Klein scale as low as 2 TeV. Accommodating small neutrino masses forces one to introduce a large hierarchy of scales into the model, making pressing the question of a suitable stabilization mechanism.

Item Type:	Article
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User:	Stephan Huber
Date Deposited:	06 Feb 2012 21:21
Last Modified:	07 Mar 2017 06:12
URI:	http://sro.sussex.ac.uk/id/eprint/30873

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