The hyperchargeless triplet Majoron model
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Santamaria, Arcadi
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Aquest document és un/a article, creat/da en: 1989
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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, μ→eγ can proceed with branching ratios at the verge of the present experimental limit and there are no additional decay modes of the Z0 into invisible particles. |
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