# ICHEP2012

Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

## Large lepton mixing angles from a 4+1-dimensional SU(5) x A_{4} domain-wall braneworld model

Jul 7, 2012, 4:15 PM
15m
Room 219 (Melbourne Convention and Exhibition Centre)

### Room 219

#### Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 3 - BSM - Non-SUSY Exotics

### Speaker

Mr Callen Benjamin (University of Melbourne (AU))

### Description

We propose an extension of the 4+1D $SU(5)$ domain-wall braneworld of Davies, George and Volkas which includes the addition of a discrete $A_4$ flavor symmetry. We show that lepton mixing and light Majorana neutrino masses can be generated from the additional $A_{4}$ physics while at the same time sufficient parameter freedom can be maintained in the charged fermion sector to produce charged fermion masses and quark mixing naturally from the split fermion mechanism of Arkani-Hamed and Schmalz. Importantly, we show that the vacuum realignment problem typical of discrete flavor symmetry models of quark and lepton mixing can be solved by separating the appropriate flavons in the extra dimension, leading to exponentially sensitive suppression of the operators responsible for vacuum realignment.

### Primary authors

Mr Callen Benjamin (University of Melbourne (AU)) Prof. Raymond Volkas (University of Melbourne)

 Slides