Supernova Nucleosynthesis, Radioactive Nuclear Reactions and Neutrino-Mass Hierarchy

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- 16 O and 11...

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Bibliographic Details
Published in:EPJ Web of Conferences 2022-01, Vol.260, p.1007
Main Authors: Yao, Xingqun, Kusakabe, Motohiko, Kajino, Toshitaka, Cherubini, Silvio, Hayakawa, Seiya, Yamaguchi, Hidetoshi
Format: Article
Language:English
Subjects:
Isotope ratios
Microprocessors
Neutrinos
Nuclear fusion
Nuclear reactions
Presolar grains
Supernovae
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Summary: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- 16 O and 11 C(α,p) 14 N reactions among them have the biggest effect on the final 7 Li/ 11 B isotopic abundance ratio. The neutrino mass hierarchy is constrained in our nucleosynthetic method with measured 7 Li/ 11 B value in SiC-X presolar grains. The inverted hierarchy is statistically more favored at the 2-σ C.L. [1].
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/202226001007