Published March 2006 | Version v1
Journal article Metadata-only

Neutrino masses with inverse hierarchy from broken Le-Lμ-Lτ: a reappraisal

Creators

  • 1. Dipartimento di Fisica 'E. Amaldi', Universita di Roma Tre, INFN, Sezione di Roma Tre, I-00146 Rome (Italy)
  • 2. CERN, Department of Physics, Theory Division, CH-1211 Geneva 23 (Switzerland)
  • 3. Scuola Normale Superiore, I-56100 Pisa (Italy)
  • 4. Dipartimento di Fisica 'E. Amaldi', Universita di Roma Tre, I-00146 Rome (Italy)

Description

We discuss a class of models of neutrino masses and mixings with inverse hierarchy based on a broken U(1)F flavour symmetry with charge Le-Lμ-Lτ for lepton doublets and arbitrary right-handed charges. The symmetry breaking sector receives separate contributions from flavor breaking terms and from soft mass breaking in the right handed Majorana sector. The model is able to reproduce in a natural way all observed features of the charged lepton mass spectrum and of neutrino masses and mixings (even with arbitrarily small θ13), with the exception of a moderate fine tuning which is needed to accomodate the observed small value of r Δm2sol/Δm2atm

Availability note (English)

Available online at http://stacks.iop.org/1126-6708/2006/i=03/a=047/jhep032006047.pdf or at the Web site for the Journal of High Energy Physics (ISSN 1029-8479) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/1126-6708/2006/i=03/a=047/jhep032006047.pdf;
DOI
10.1088/1126-6708/2006/03/047;

Publishing Information

Journal Title
Journal of High Energy Physics
Journal Volume
2006
Journal Issue
03
Journal Page Range
p. 047
ISSN
1126-6708

INIS

Country of Publication
Italy
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37054078
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ELECTRONS; FLAVOR MODEL; MASS SPECTRA; MIXING; MUONS; NEUTRINOS; REST MASS; SYMMETRY BREAKING; TAU PARTICLES; U-1 GROUPS
Descriptors DEC
COMPOSITE MODELS; ELEMENTARY PARTICLES; FERMIONS; HEAVY LEPTONS; LEPTONS; LIE GROUPS; MASS; MASSLESS PARTICLES; MATHEMATICAL MODELS; PARTICLE MODELS; QUARK MODEL; SPECTRA; SYMMETRY GROUPS; U GROUPS