Lepton flavor violation in lopsided models and a neutrino mass model

Details Lepton flavor violation in lopsided models and a neutrino mass model Lepton flavor violation in lopsided models and a neutrino mass model

2002-11-15

arxiv.org/abs/hep-ph/0211236v1

Eur.Phys.J. C27 (2003) 399-404

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures

Scientific paper

10.1140/epjc/s2002-01123-1

A widely adopted theoretical scheme to account for the neutrino oscillation phenomena is the see-saw mechanism together with the ``lopsided'' mass matrices, which is generally realized in the framework of supersymmetric grand unification. We will show that this scheme leads to large lepton flavor violation at low energy if supersymmetry is broken at the GUT or Plank scale. Especially, the branching ratio of $\mu\to e\gamma$ already exceeds the present experimental limit. We then propose a phenomenological model, which can account for the LMA solution to the solar neutrino problem and at the same time predict branching ratio of $\mu\to e\gamma$ below the present limit.

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