Hyperchargeless triplet Majoron model

Journal Article · Mon May 01 04:00:00 EDT 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.39.2715· OSTI ID:6320086

Santamaria, A

We study the general conditions to maintain the scale of the lepton-number-breaking vacuum expectation value at the electroweak scale. It is shown that the only possibilities are if the main component of the resulting Majoron is a hyperchargeless complex triplet or a neutral singlet. Models with a hyperchargeless triplet, even though phenomenologically more interesting, seem to be very difficult to build because they like to break charge conservation. However, we have found a particular extension, by adding an additional neutral singlet, that solves this problem. The model can give a Majorana mass to the neutrinos in the eV range, ..mu -->..e..gamma.. can proceed with branching ratios at the verge of the present experimental limit and there are no additional decay modes of the Z/sup 0/ into invisible particles.

• Research Organization: Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
• OSTI ID: 6320086
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 39:9; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
645300 -- High Energy Physics-- Particle Invariance Principles & Symmetries
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
COUPLING
DECAY
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
LEPTON NUMBER
LEPTONS
MAJORANA THEORY
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MUONS
NEUTRINOS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTONS
STANDARD MODEL
SYMMETRY BREAKING
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEINBERG-SALAM GAUGE MODEL