Neutrino self-interaction and MSW effects on the supernova neutrino-process

Abstract

We calculate the abundances of ${}^7$Li, ${}^{11}$B, ${}^{92}$Nb, ${}^{98}$Tc, ${}^{138}$La, and ${}^{180}$Ta produced by neutrino $(\nu )$ induced reactions in a core-collapse supernova explosion. We consider the modification by $\nu$ self-interaction ($\nu$-SI) near the neutrinosphere and the Mikheyev-Smirnov-Wolfenstein effect in outer layers for time-dependent neutrino energy spectra. Abundances of ${}^7$Li and heavy isotopes ${}^{92}$Nb, ${}^{98}$Tc and ${}^{138}$La are reduced by a factor of 1.5-2.0 by the $\nu$-SI. In contrast, ${}^{11}$B is relatively insensitive to the $\nu$-SI. We find that the abundance ratio of heavy to light nucleus, ${}^{138}$La/${}^{11}$B, is sensitive to the neutrino mass hierarchy, and the normal mass hierarchy is more likely to be consistent with the solar abundances.

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• Comprehensive Analyses of the Neutrino-Process in the Core-collapsing Supernova
• Collective neutrino oscillations and heavy-element nucleosynthesis in supernovae: exploring potential effects of many-body neutrino correlations
• Nuclear Weak Rates and Nuclear Weak Processes in Stars
• Neutrino-antineutrino oscillations induced by strong magnetic fields in dense matter
• Flavor Equilibration of Supernova Neutrinos: Exploring the Dynamics of Slow Modes
• Progress in Nuclear Astrophysics of East and Southeast Asia
• The viability of the 3+1 neutrino model in the supernova neutrino process
• Testing common approximations of neutrino fast flavor conversion
• Nuclear astrophysics
• Effects of spacetime geometry on neutrino oscillation inside a Core-Collapse Supernova
• New Insights into Uncertainties in the Relic Neutrino Background and Effects from the Nuclear Equation of State