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Título

Model for fermion masses and lepton mixing in SO(10) x A(4)

Autor Morisi, Stefano; Picariello, Marco; Torrente Luján, Emilio
Palabras clave Neutrino mass
Neutrino oscillations
SO(10) groups
Discrete symmetries
Grand unified theory
Fecha de publicación 20-abr-2007
EditorAmerican Physical Society
Citación Physical Review D 75(7): 075015 (2007)
ResumenThe discrete flavor symmetry A(4) explains very well neutrino data at low energy, but it seems difficult to extend it to grand unified models since, in general, left-handed and right-handed fields belong to different A(4) representations. Recently a model has been proposed where all the fermions equally transform under A(4). We study here a concrete SO(10) realization of such a model providing small neutrino masses through the see-saw mechanism. We fit the charged fermion masses run up to the unification scale. Some fermion masses properties come from the SO(10) symmetry while lepton mixing angles are a consequence of the A(4) properties. Moreover, our model predicts the absolute value of the neutrino masses; these are in the range m(nu)similar or equal to 0.005-0.052 eV.
Descripción 8 pages.-- PACS nrs.: 11.30.Hv; 12.10.-g; 12.15.Ff; 14.60.Pq.-- ISI Article Identifier: 000246076700079.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0702034
Versión del editorhttp://dx.doi.org/10.1103/PhysRevD.75.075015
URI http://hdl.handle.net/10261/9185
DOI10.1103/PhysRevD.75.075015
ISSN1550-7998
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