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The Seesaw with Many Right-Handed Neutrinos
There are no upper limits on the possible number of massive, singlet (right--handed) neutrinos that may participate in the seesaw mechanism, and some string constructions motivate seesaw models with up to O(100) right--handed neutrinos. In this case, the seesaw mass scale can be significantly higher...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2007
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| Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2007.08.031 http://cds.cern.ch/record/1048488 |