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Nucleosynthesis in supernovae and neutrino oscillation

Suzuki, Toshio*; Yoshida, Takashi*; Chiba, Satoshi; Kajino, Toshitaka*

Neutrino processes play important roles in synthesis of $$^7$$Li, $$^{11}$$B, $$^{138}$$La, $$^{180}$$Ta and other elements in explosive environments realized in supernovae. In order to understand better the neutrino processes, we constructed new shell model Hamiltonians based on recent progress of physics in unstable nuclei near the neutron drip-line. We then applied these Hamiltonians to calculate the neutrino-nucleus reaction cross sections through detailed and careful comparison of nuclear properties with those of relevant experimental data. We can thus carry out precise and reliable theoretical estimate of supernova nucleosynthesis of $$^{7}$$Li, $$^{11}$$B, etc including the neutrino processes. Finally we propose a new method to determine unknown neutrino oscillation parameters, namely the mixing angle $$theta_{13}$$ and the mass hierarchy, by making use of strong dependence of the yields of $$^{7}$$Li, $$^{11}$$B on these parameters.

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