EPJ Web Conf.
Volume 260, 2022The 16th International Symposium on Nuclei in the Cosmos (NIC-XVI)
|Number of page(s)||4|
|Section||Nuclear Reaction Rates and Stellar Abundances|
|Published online||24 February 2022|
Supernova Nucleosynthesis, Radioactive Nuclear Reactions and Neutrino-Mass Hierarchy
1 School of Physics & International Research Center for Big-Bang Cosmology and Element Genesis, Beihang University, Beijing 100083, China
2 National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan
3 Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
4 Department of Physics and Astronomy, “Ettore Majorana” University of Catania, Catania, Italy
5 Center for Nuclear Study, The University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Published online: 24 February 2022
The ν-process nucleosynthesis in core-collapse supernovae is a sensitive probe of unknown neutrino mass hierarchy through the MSW effect. We carefully studied the uncertainties of almost one hundred ν-induced and nuclear reactions associated with the nucleosynthesis and found that the ν-16O and 11C(α,p)14N reactions among them have the biggest effect on the final 7Li/11B isotopic abundance ratio. The neutrino mass hierarchy is constrained in our nucleosynthetic method with measured 7Li/11B value in SiC-X presolar grains. The inverted hierarchy is statistically more favored at the 2-σ C.L. .
© The Authors, published by EDP Sciences, 2022
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