6533b871fe1ef96bd12d113b
RESEARCH PRODUCT
Hyperchargeless triplet Majoron model.
A. Santamariasubject
Massless particlePhysicsMAJORANAParticle physicsBranching fractionHigh Energy Physics::PhenomenologyElementary particleSinglet stateElectroweak scalePartícules (Física nuclear)Vacuum expectation valueMajorondescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1989-05-01 | Physical review. D, Particles and fields |