Neutrino mixing, decays and supernova 1987A

Details Neutrino mixing, decays and supernova 1987A Neutrino mixing, decays and supernova 1987A

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phlb..200..115f&link_type=abstract

Physics Letters B, Volume 200, Issue 1-2, p. 115-121.

Physics

57

Scientific paper

We discuss the evolution of neutrino beams in the presence of both flavor mixing and decays, and give a careful discussion of the implications of the supernova 1987A observations for neutrino mixing angles and lifetimes. Although the observation of electron antineutrinos from SN 1987A naively implies a lower bound on the electron neutrino lifetime τve>5.7×105(mve/eV)s, neutrino mixing must be taken into account when using this to place constraints on particle physics models with neutrino decay. In models with large mixing angles, a short lifetime for the neutrino with large electron neutrino component cannot be ruled out.

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