Supernova nucleosynthesis and neutrino oscillation

Neutrinos play the critical roles in nucleosynthesis of light-to-heavy mass nuclei like ⁷Li, ¹¹B, ¹³⁸La and ¹⁸⁰Ta in core-collapse supernovae. We find average neutrino temperatures of three flavor neutrinos so that the supernova nucleosynthesis models of the neutrino-process and the r-process can explain the observed solar-system abundance and Galactic chemical evolution of these isotopes. We propose a method to determine the unknown neutrino oscillation parameters θ ₁₃ and mass hierarchy by the use of the MSW effects on the supernova nucleosynthesis.