Cosmological and experimental constraints on the tau neutrino

Details Cosmological and experimental constraints on the tau neutrino Cosmological and experimental constraints on the tau neutrino

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phlb..148..347s&link_type=abstract

Physics Letters B, Volume 148, Issue 4-5, p. 347-354.

Physics

70

Scientific paper

Recent experimental results, together with a cosmological argument concerning the survival of primordially synthesized deuterium, exclude an unstable tau neutrino heavier than ~ MeV. The cosmological bound on stable neutrinos then restricts it further to be lighter than ~ 100 eV, in the absence of any available fast decay mode. These constraints are also relevant to other heavy neutrinos and unstable supersymmetric particles.

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