Fission Cycling in Supernova Nucleosynthesis: Active-Sterile Neutrino Oscillations

Abstract

We investigate nucleosynthesis in the supernovae post-core bounce neutrino-driven wind environment in the presence of active-sterile neutrino transformation. We consider active-sterile neutrino oscillations for a range of mixing parameters: vacuum mass-squared differences of 0.1 eV^2 < dm^2 < 100 eV^2, and vacuum mixing angles of sin^2(2 theta_v) > 10^-4. We find a consistent r-process pattern for a large range of mixing parameters that is in rough agreement with the halo star CS 22892-052 abundances and the pattern shape is determined by fission cycling. We find that the allowed region for the formation of the r-process peaks overlaps the LSND and NSBL (3+1) allowed region.

arXiv comment11 pages, 7 figures, Corrected Typos

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• The influence of collective neutrino oscillations on a supernova r-process
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• Impact of eV-mass sterile neutrinos on neutrino-driven supernova outflows
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• Supernova Constraints on Massive (Pseudo)Scalar Coupling to Neutrinos
• Fission Cycling in a Supernova r-process
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• Nonstandard Neutrino Interactions in Supernovae
• Neutron capture on 130Sn during r-process freeze-out
• Coupling Neutrino Oscillations and Simulations of Core-Collapse Supernovae
• Neutrino spin oscillations in polarized matter
• Neutrino flavor transformations in supernovae as a probe for nonstandard neutrino-scalar interactions
• GR Effects in Supernova Neutrino Flavor Transformation
• Fission barriers in neutron-proton isospin plane for heavy neutron-rich nuclei
• Neutrinos and Heavy Element Nucleosynthesis