Indirect photofission of light elements from high-energy neutrinos in the early universe

Details Indirect photofission of light elements from high-energy neutrinos in the early universe Indirect photofission of light elements from high-energy neutrinos in the early universe

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phlb..262..298g&link_type=abstract

Physics Letters B, Volume 262, Issue 2-3, p. 298-302.

Physics

10

Scientific paper

High-energy neutrinos in the early universe can produce electron-positron pairs by annihilating with cosmic background neutrinos. These high-energy electrons thermalize to produce a cascade of lower-energy photons which can fission light elements. We use this process to constrain ``invisible'' particle decays, in which a decaying particle produces neutrinos but no electromagnetically interacting particles in its decay. These limits are applied to specific neutrino and gravitino decay models.

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