Published January 5, 2009 | Version v1
Journal article

Solving the SUSY flavour and CP problems with non-Abelian family symmetry and supergravity

  • 1. Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Foehringer Ring 6, D-80805 Muenchen (Germany)
  • 2. School of Physics and Astronomy, University of Southampton, SO16 1BJ Southampton (United Kingdom)
  • 3. The Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford, OX13NP (United Kingdom)

Description

Can a theory of flavour capable of describing the spectrum of fermion (including neutrino) masses and mixings also contain within it the seeds for a solution of the SUSY flavour and CP problems? We argue that supergravity together with a non-Abelian family symmetry can completely resolve the SUSY flavour and CP problems in a broad class of theories in which family symmetry and CP is spontaneously broken in the flavon sector. We show that a simple superpotential structure can suppress the F-terms of the flavons and GUT scale Higgs fields and that, if this mechanism is implemented, the resulting flavour and CP violation is suppressed and comfortably within the experimental limits. For illustration, we study a specific model based on SU(3) family symmetry, but similar models based on non-Abelian (continuous or discrete) family symmetry will lead to similar results

Availability note (English)

Available from http://dx.doi.org/10.1016/j.physletb.2008.11.020

Additional details

Identifiers

DOI
10.1016/j.physletb.2008.11.020;
arXiv
arXiv:0807.5047v1;
PII
S0370-2693(08)01383-X;

Publishing Information

Journal Title
Physics Letters. Section B
Journal Volume
670
Journal Issue
4-5
Journal Page Range
p. 383-389
ISSN
0370-2693
CODEN
PYLBAJ

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.