Charged-current scattering off the 16O nucleus as a detection channel for supernova neutrinos
Charged-current scattering off the 16O nucleus as a detection channel for supernova neutrinos
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DOI：
10.1093/ptep/pty134
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发表时间：
2018-09
影响因子：
3.5
通讯作者：
K. Nakazato;Toshio Suzuki;M. Sakuda
中科院分区：
文献类型：
--
作者：
K. Nakazato;Toshio Suzuki;M. Sakuda
Event spectra of the neutrino-$^{16}$O charged-current reactions in Super-Kamiokande are evaluated for a future supernova neutrino burst. Since these channels are expected to be useful for diagnosing a neutrino spectrum with high average energy, the evaluations are performed not only for an ordinary supernova neutrino model but also for a model of neutrino emission from a black-hole-forming collapse. Using shell model results, whose excitation energies are consistent with the experimental data, the cross sections of the $^{16}$O($\nu_e, e^-$)X and $^{16}$O($\bar\nu_e, e^+$)X reactions for each nuclear state with a different excitation energy are employed in this study. It is found that, owing to the components of the reaction with higher excitation energy, the event spectrum becomes 4-7 MeV softer than that in the case without considering the excitation energies. In addition, a simplified approach to evaluate the event spectra is proposed for convenience and its validity is examined.
