Bounds on sterile neutrinos from nucleosynthesis

We study the effects on nucleosynthesis of possible oscillations between ν e, ν μ or ν τ and a non-interacting (“sterile”) neutrino state. Taking into account the coherent interactions of the neutrinos with the primeval plasma is shown to be essential. Nucleosynthesis most likely excludes a signific...

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Bibliographic Details
Published in:Physics letters. B 1990-03, Vol.237 (3), p.440-445
Main Authors: Barbieri, R., Dolgov, A.
Format: Article
Language:English
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Summary:We study the effects on nucleosynthesis of possible oscillations between ν e, ν μ or ν τ and a non-interacting (“sterile”) neutrino state. Taking into account the coherent interactions of the neutrinos with the primeval plasma is shown to be essential. Nucleosynthesis most likely excludes a significant portion of the mixing parameter space. The relevance to the solar neutrino problem of these considerations is discussed.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(90)91203-N