An Active-Sterile Neutrino Transformation Solution for r-Process Nucleosynthesis
Abstract
We discuss how matter-enhanced active-sterile neutrino transformation in both neutrino and antineutrino channels could enable the production of the rapid neutron capture (r-process) nuclei in neutrino-heated supernova ejecta. In this scheme the lightest sterile neutrino would be heavier than the electron neutrino and split from it by a vacuum mass-squared difference roughly between 3 and 70 eV2 and vacuum mixing angle given by 2 2θes > 10-4.
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