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Measurable Neutrino Mass Scale in A4 x SU(5) · Around

2010

Measurable Neutrino Mass Scale in A4 x SU(5)

Antusch, Stefan, King, Stephen F., Spinrath, Martin

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We propose a supersymmetric A4 x SU(5) model of quasi-degenerate neutrinos which predicts the effective neutrino mass m_ee relevant for neutrinoless double beta decay to be proportional to the neutrino mass scale, thereby allowing its determination approximately independently of unknown Majorana phases.

Such a natural quasi-degeneracy is achieved by using the A4 (as an example of a non-Abelian family symmetry with real triplet representations) to enforce a type II seesaw contribution to the neutrino mass matrix proportional to the identity.
Tri-bimaximal neutrino mixing arises from a type I seesaw contribution via A4 family symmetry and constrained sequential dominance.
We perform a numerical fit to the quark and lepton masses and quark mixing where a simple ansatz describing quark CP violation with alpha approximately 90 degrees also leads to the leptonic phase prediction delta_MNS approximately 90 degrees.

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Similar

S. Antusch, J. Kersten, M. Lindner, M. Ratz and M. A. Schmidt, JHEP 0503
2005
Cited alongside, same era.
S. F. King, arXiv:0712.1750 [physics.pop-ph]; S. F. King, Rept. Prog. Phys. 67
Original
2006
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G. Altarelli and F. Feruglio, Nucl. Phys. B 741
2006
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R. Barbieri, L. J. Hall, G. L. Kane and G. G. Ross, arXiv:hep-ph/9901228; I. de Medeiros Varzielas and G. G. Ross, Nucl. Phys. B 733
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2007
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2007
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S. F. King and M. Malinsky, Phys. Lett. B 645
2007
Cited alongside, same era.

Then

Z. z. Xing, H. Zhang and S. Zhou, Phys. Rev. D 77
Original
2008
Later among the works it cites.
S. Antusch, S. F. King and M. Malinsky, Nucl. Phys. B 820
Original
2008
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C. Amsler et al
2008
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S. F. King and C. Luhn, JHEP 0910
Original
2009
Later among the works it cites.
I. d. M. Varzielas, G. G. Ross and M. Serna, Phys. Rev. D 80
Original
2009
Later among the works it cites.
S. Antusch and M. Spinrath, Phys. Rev. D 79

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