Neutrino self-interaction and MSW effects on the supernova neutrino-process
High Energy Astrophysical Phenomena
2023-11-02 v2 Solar and Stellar Astrophysics
Abstract
We calculate the abundances of Li, B, Nb, Tc, La, and Ta produced by neutrino induced reactions in a core-collapse supernova explosion. We consider the modification by self-interaction (-SI) near the neutrinosphere and the Mikheyev-Smirnov-Wolfenstein effect in outer layers for time-dependent neutrino energy spectra. Abundances of Li and heavy isotopes Nb, Tc and La are reduced by a factor of 1.5-2.0 by the -SI. In contrast, B is relatively insensitive to the -SI. We find that the abundance ratio of heavy to light nucleus, La/B, is sensitive to the neutrino mass hierarchy, and the normal mass hierarchy is more likely to be consistent with the solar abundances.
Keywords
Cite
@article{arxiv.1903.02086,
title = {Neutrino self-interaction and MSW effects on the supernova neutrino-process},
author = {Heamin Ko and Myung-Ki Cheoun and Eunja Ha and Motohiko Kusakabe and Takehito Hayakawa and Hirokazu Sasaki and Toshitaka Kajino and Masa-aki Hashimoto and Masaomi Ono and Mark D. Usang and Satoshi Chiba and Ko Nakamura and Alexey Tolstov and Ken'ichi Nomoto and Toshihiko Kawano and Grant J. Mathews},
journal= {arXiv preprint arXiv:1903.02086},
year = {2023}
}