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SUSY SU(5)SU(5) with singlet plus adjoint matter and A4A4 family symmetry

SUSY SU(5)SU(5) with singlet plus adjoint matter and A4A4 family symmetry
SUSY SU(5)SU(5) with singlet plus adjoint matter and A4A4 family symmetry
We propose a supersymmetric (SUSY) SU (5) Grand Unified Theory (GUT) including a single right-handed neutrino singlet and an adjoint matter representation below the GUT scale and extend this model to include an A 4 family symmetry and a gauged anomaly-free Abelian group. In our approach hierarchical neutrino masses result from a combined type I and type III seesaw mechanism, and the A 4 symmetry leads to tri-bimaximal mixing which arises indirectly. The mixing between the single right-handed neutrino and the matter in the adjoint is forbidden by excluding an adjoint Higgs, leading to a diagonal heavy Majorana sector as required by constrained sequential dominance. The model also reproduces a realistic description of quark and charged lepton masses and quark mixings, including the Georgi–Jarlskog relations and the leptonic mixing sum rules inlMMLBox and a =? r 2 /4 with r = ? C /3
0370-2693
396-402
Cooper, Iain K.
66c0505c-6a76-44f3-a3a6-563c5fbbfd84
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Luhn, Christoph
59a723a0-9d34-48e8-9b97-9d608ad196c8
Cooper, Iain K.
66c0505c-6a76-44f3-a3a6-563c5fbbfd84
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Luhn, Christoph
59a723a0-9d34-48e8-9b97-9d608ad196c8

Cooper, Iain K., King, Stephen F. and Luhn, Christoph (2010) SUSY SU(5)SU(5) with singlet plus adjoint matter and A4A4 family symmetry. Physics Letters B, 690 (4), 396-402. (doi:10.1016/j.physletb.2010.05.066).

Record type: Article

Abstract

We propose a supersymmetric (SUSY) SU (5) Grand Unified Theory (GUT) including a single right-handed neutrino singlet and an adjoint matter representation below the GUT scale and extend this model to include an A 4 family symmetry and a gauged anomaly-free Abelian group. In our approach hierarchical neutrino masses result from a combined type I and type III seesaw mechanism, and the A 4 symmetry leads to tri-bimaximal mixing which arises indirectly. The mixing between the single right-handed neutrino and the matter in the adjoint is forbidden by excluding an adjoint Higgs, leading to a diagonal heavy Majorana sector as required by constrained sequential dominance. The model also reproduces a realistic description of quark and charged lepton masses and quark mixings, including the Georgi–Jarlskog relations and the leptonic mixing sum rules inlMMLBox and a =? r 2 /4 with r = ? C /3

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Published date: 2010

Identifiers

Local EPrints ID: 179045
URI: http://eprints.soton.ac.uk/id/eprint/179045
ISSN: 0370-2693
PURE UUID: abbd09bc-0ce7-4098-ae9e-95c15952b933

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Date deposited: 26 Apr 2011 10:50
Last modified: 16 Jul 2019 23:44

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