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Heavy sterile neutrinos: bounds from big-bang nucleosynthesis and SN 1987A |
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| Authors: | A. D. Dolgov S. H. Hansen G. Raffelt D. V. Semikoz |
| Affiliation: | a INFN section of Ferrara, Via del Paradiso 12, 44100 Ferrara, Italy b Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, 80805 München, Germany c Institute of Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary Prospect 7a, Moscow 117312, Russia |
| Abstract: | Cosmological and astrophysical effects of heavy (10–200 MeV) sterile Dirac neutrinos, mixed with the active ones, are considered. The bounds on mass and mixing angle from both supernovae and big-bang nucleosynthesis are presented. |
| Keywords: | PACS classification codes: 14.60.St 26.50.+x 95.30.Cq |
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