Lepton masses and mixing without Yukawa hierarchies

Details Lepton masses and mixing without Yukawa hierarchies Lepton masses and mixing without Yukawa hierarchies

2006-11-07

arxiv.org/abs/hep-ph/0611082v1

Phys.Rev.D74:093007,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 2 figures, accepted for publication in Phys. Rev. D1

Scientific paper

10.1103/PhysRevD.74.093007

We investigate the neutrino masses and mixing patten in a version of the $SU(3)_c\otimes SU(3)_L\otimes U(1)_X$ model with one extra exotic charged lepton per family as introduced by Ozer. It is shown that an extended scalar sector, together with a discrete $Z_2$ symmetry, is able to reproduce a consistent lepton mass spectrum without a hierarchy in the Yukawa coupling constants, the former as a carefull balance between one universal see-saw and two radiative mechanisms.

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