Large constraints on neutrino-neutrino interactions from primordial nucleosynthesis

Eduard Massó, Ramon Toldrà

Research output: Contribution to journalArticleResearchpeer-review

17 Citations (Scopus)


We use the constraints arising from primordial nucleisynthesis to bound the strength F of non-standard neutrino-neutrino interactions, when the right-handed neutrinos participate in the interaction. We find F<3×10-3GF, which is five orders of magnitude more stringent than the limit obtained using LEP data. We also show that secret interactions of neutrinos mediated by massless particles must have a coupling f less than 2 × 10-5. This also ameliorates previous limits in the literature. © 1994.
Original languageEnglish
Pages (from-to)132-134
JournalPhysics Letters B
Issue number1-2
Publication statusPublished - 28 Jul 1994


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