Limits from supernovae on neutrino radiative lifetimes

Details Limits from supernovae on neutrino radiative lifetimes Limits from supernovae on neutrino radiative lifetimes

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978phlb...79..511f&link_type=abstract

Physics Letters B, Volume 79, Issue 4-5, p. 511-513.

Physics

24

Scientific paper

It is shown that, since the bulk of the approximately 1053 ergs of neutron star binding energy emerges from a supernova as neutrinos the presence of a radiative decay channel for any type of neutrino with mass less than about 10 MeV can be severely constrained. Lifetimes longer than a thousand seconds but less than the age of the universe are eliminated by the observed X- and γ-ray background limits, as discussed previously by Cowsik [1]. Lifetimes between about 10-3s and 103s are restricted by a combination of X- and γ-ray background limits, and by the total energetics of supernova events themselves, since such decays would occur within the presupernova star. These limits would also apply to axions.
Also Department of Physics and Astronomy and Astro- physics.

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