Neutrino masses and lepton flavor violation in supersymmetric models with lopsided Froggatt-Nielsen charges - INSPIRE

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Neutrino masses and lepton flavor violation in supersymmetric models with lopsided Froggatt-Nielsen charges

Joe Sato
(
- Kyushu U.
)
,
Kazuhiro Tobe
(
- CERN
)

Dec, 2000

33 pages

Published in:

Phys.Rev.D 63 (2001) 116010

e-Print:

hep-ph/0012333 [hep-ph]

DOI:

10.1103/PhysRevD.63.116010

Report number:

CERN-TH-2000-385

View in:

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Abstract:

We analyze in detail lepton-flavor violation (LFV) in the charged-lepton sector such as

\mu \to e \gamma

,

\tau \to \mu \gamma

,

\mu \to eee

and the

\mu \to e

conversion in nuclei, within the framework of supersymmetric models with lopsided Froggatt--Nielsen charges, in which the large mixing in the neutrino sector as well as small mixings in the quark sector can be naturally accommodated. We show that the present experimental limits on the LFV processes already exclude some of the models. The future proposed search for LFV, especially in muon processes, can provide a significant probe to this framework. We also stress the importance of the measurement of

U^{MNS}_{e3}

in neutrino experiments, and the fact that the KamLAND experiment could play a significant role to test a certain class of models.

supersymmetry: model
lepton: radiative decay
lepton: leptonic decay
nuclear physics
transition: muon electron
flavor: violation
neutrino: mass
neutrino: mixing angle
muon: branching ratio
tau: branching ratio

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