DOI: 10.1140/epjc/s2002-01123-1
Lepton flavor violation in lopsided models and a neutrino mass model
X.-J. BiDepartment of Physics, Tsinghua University, Beijing 100084, P.R. China
(Received: 18 November 2002 / Published online: 14 February 2003 )
Abstract
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 Planck scale. Especially, the branching
ratio
of
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 a branching ratio of
below the
present limit.
© Società Italiana di Fisica, Springer-Verlag 2003
