The evolution of neutrino masses and mixings in the 5D MSSM

A. S. Cornell; Aldo Deandrea; Lu-Xin Liu; Ahmad Tarhini

doi:10.1140/epjp/i2013-13006-4

EPJ

The evolution of neutrino masses and mixings in the 5D MSSM

A. S. Cornell¹^*, Aldo Deandrea²^,3, Lu-Xin Liu¹ and Ahmad Tarhini²^,3

¹ National Institute for Theoretical Physics; School of Physics, University of the Witwatersrand, 2050, Wits, South Africa
² Université de Lyon, F-69622, Lyon, France
³ Université Lyon 1, F-69622, Villeurbanne Cedex, France

Received: 18 October 2012
Revised: 19 December 2012
Accepted: 29 December 2012
Published online: 21 January 2013

Abstract

We consider a five-dimensional Minimal Supersymmetric Standard Model compactified on a S ¹/Z ₂ orbifold, and study the evolution of neutrino masses, mixing angles and phases for different values of β and different radii of compactification. We consider the usual four-dimensional Minimal Supersymmetric Standard Model limit plus two extra-dimensional scenarios: where all matter superfields can propagate in the bulk, and where they are constrained to the brane. We discuss in both cases the evolution of the mass spectrum, the implications for the mixing angles and the phases. We find that a large variation for the Dirac phase is possible, which makes models predicting maximal leptonic CP violation particularly appealing.