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

Solving the SUSY flavour and CP problems with non-abelian family symmetry and supergravity
Solving the SUSY flavour and CP problems with non-abelian family symmetry and supergravity
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 suppresses 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.
0370-2693
383-389
Antusch, Stefan
6a8c0380-78ea-4bcb-afad-4348d84eafba
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Malinsky, Michal
7f4e2b8d-0bf6-4592-9bbd-ec61f52b8b5c
Ross, Graham G.
b4b0d290-c840-45a2-8bb3-0ed7e4682fd3
Antusch, Stefan
6a8c0380-78ea-4bcb-afad-4348d84eafba
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Malinsky, Michal
7f4e2b8d-0bf6-4592-9bbd-ec61f52b8b5c
Ross, Graham G.
b4b0d290-c840-45a2-8bb3-0ed7e4682fd3

Antusch, Stefan, King, Stephen F., Malinsky, Michal and Ross, Graham G. (2009) Solving the SUSY flavour and CP problems with non-abelian family symmetry and supergravity. Physics Letters B, 670 (4-5), 383-389. (doi:10.1016/j.physletb.2008.11.020).

Record type: Article

Abstract

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 suppresses 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.

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e-pub ahead of print date: 13 November 2008
Published date: 5 January 2009

Identifiers

Local EPrints ID: 144089
URI: https://eprints.soton.ac.uk/id/eprint/144089
ISSN: 0370-2693
PURE UUID: 122021b0-51ea-4bf1-ab00-2a5aeec0e259

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Date deposited: 18 Apr 2011 14:33
Last modified: 28 Oct 2019 21:42

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