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Journal of High Energy Physics Volume 2007 JHEP07(2007) Create an alert RSS this journal

John Ellis et al JHEP07(2007)052 doi:10.1088/1126-6708/2007/07/052

CP and lepton-number violation in GUT neutrino models with abelian flavour symmetries

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John Ellis1, Mario E. Gómez2 and Smaragda Lola3

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Abstract References Cited By
We study the possible magnitudes of CP and lepton-number-violating quantities in specific GUT models of massive neutrinos with different Abelian flavour groups, taking into account experimental constraints and requiring successful leptogenesis. We discuss SU(5) and flipped SU(5) models that are consistent with the present data on neutrino mixing and upper limits on the violations of charged-lepton flavours and explore their predictions for the CP-violating oscillation and Majorana phases. In particular, we discuss string-derived flipped SU(5) models with selection rules that modify the GUT structure and provide additional constraints on the operators, which are able to account for the magnitudes of some of the coefficients that are often set as arbitrary parameters in generic Abelian models.

Keywords

Rare Decays

Neutrino Physics

Supersymmetry Phenomenology

 

E-print Number: hep-ph/0612292

Cited: by |

Refers: to

PACS

11.30.Er Charge conjugation, parity, time reversal, and other discrete symmetries

11.30.Hv Flavor symmetries

14.60.Pq Neutrino mass and mixing

14.60.Lm Ordinary neutrinos (nue, numu, nutau)

12.10.Dm Unified theories and models of strong and electroweak interactions

11.15.-q Gauge field theories

Subjects

Particle physics and field theory

Dates

Issue 07 (July 2007)

Received 24 January 2007, accepted for publication 5 July 2007

Published 18 July 2007



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