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

John Gratsias, Robert J. Scherrer, David N. Spergel

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)298-302
Number of pages5
JournalPhysics Letters B
Volume262
Issue number2-3
DOIs
StatePublished - Jun 20 1991

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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