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We reinvestigate effects of neutrino oscillations on the production of 7Liand 11B in core-collapse supernovae (SNe). During the propagation of neutrinosfrom the proto-neutron star, their flavors change and the neutrino reactionrates for spallation of 12C and 4He are affected. In this work correctedneutrino spallation cross sections for 4He and 12C are adopted. Initialabundances involving heavy s-nuclei and other physical conditions are derivedin a new calculation of the SN 1987A progenitor in which effects of theprogenitor metallicity are included. A dependence of the SN nucleosynthesis andfinal yields of 7Li and 11B on the neutrino mass hierarchy are shown in severalstellar locations. In the normal hierarchy case, the charged current reactionrates of electron neutrinos are enhanced, and yields of proton-rich nuclei,along with 7Be and 11C, are increased. In the inverted hierarchy case, thecharged current reaction rates of electron antineutrinos are enhanced, andyields of neutron-rich nuclei, along with 7Li and 11B, are increased. We findthat variation of the metallicity modifies the yields of 7Li, 7Be, 11B, and11C. This effect is caused by changes in the neutron abundance during SNnucleosynthesis. Therefore, accurate calculations of Li and B production in SNeshould take into account the metallicity of progenitor stars.

Supernova Neutrino Process of Li and B Revisited