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A possible symmetry of the $\nu$MSM
To explain the dark matter and the baryon asymmetry of the Universe, the parameters of the $\nu$MSM (an extension of the Minimal Standard Model by three singlet neutrinos with masses smaller than the electroweak scale) must be fine-tuned: one of the masses should be in the ${\cal O} (10)$ keV region...
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| Lenguaje: | eng |
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2006
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| Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysb.2006.11.003 http://cds.cern.ch/record/946529 |