https://doi.org/10.1140/epjc/s10052-012-2126-7
Regular Article - Theoretical Physics
Neutrino masses and LFV from minimal breaking of U(3)5 and U(2)5 flavor symmetries
1
Dipartimento di Fisica, Università di Roma Tre, Via della Vasca Navale 84, 00146, Rome, Italy
2
Theory Division, CERN, 1211, Geneva 23, Switzerland
3
Laboratori Nazionali di Frascati, INFN, Via E. Fermi 40, 00044, Frascati, Italy
* e-mail: gino.isidori@lnf.infn.it
Received:
19
April
2012
Revised:
22
June
2012
Published online:
31
August
2012
We analyze neutrino masses and Lepton Flavor Violation (LFV) in charged leptons with a minimal ansatz about the breaking of the U(3)5 flavor symmetry, consistent with the U(2)3 breaking pattern of quark Yukawa couplings, in the context of supersymmetry. Neutrino masses are expected to be almost degenerate, close to present bounds from cosmology and 0νββ experiments. We also predict s
13≈s
23|V
td
|/|V
ts
|≈0.16, in perfect agreement with the recent Daya-Bay result. For slepton masses below 1 TeV, barring accidental cancellations, we expect 
and 
, within the reach of future experimental searches.
© Springer-Verlag / Società Italiana di Fisica, 2012
