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Fission Cycling in Supernova Nucleosynthesis: Active-Sterile Neutrino Oscillations

J. Beun·G. C. McLaughlin·R. Surman·W. R. Hix
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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.

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J. Beun, G. C. McLaughlin, R. Surman, W. R. Hix. 2006-02-26. Fission Cycling in Supernova Nucleosynthesis: Active-Sterile Neutrino Oscillations. https://doi.org/10.1103/physrevd.73.093007

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