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Sterile neutrinos and supernova nucleosynthesis

D. O. Caldwell, G. M. Fuller, Y. -Z. Qian

astro-pharXiv:astro-ph/9910175

Abstract

A light sterile neutrino species has been introduced to explain simultaneously the solar and atmospheric neutrino puzzles and the results of the LSND experiment, while providing for a hot component of dark matter. Employing this scheme of neutrino masses and mixings, we show how matter-enhanced active-sterile neutrino transformation followed by active-active neutrino transformation can solve robustly the neutron deficit problem encountered by models of r-process nucleosynthesis associated with neutrino-heated supernova ejecta.

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