Supernova Nucleosynthesis, Radioactive Nuclear Reactions and Neutrino-Mass Hierarchy
Supernova Nucleosynthesis, Radioactive Nuclear Reactions and Neutrino-Mass Hierarchy
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超新星核合成、放射性核反应和中微子质量等级
DOI：
10.1051/epjconf/202226001007
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发表时间：
2022
影响因子：
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通讯作者：
Yamaguchi Hidetoshi
中科院分区：
文献类型：
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作者：
Yao Xingqun;Kusakabe Motohiko;Kajino Toshitaka;Cherubini Silvio;Hayakawa Seiya;Yamaguchi Hidetoshi
核心坍缩超新星中的ν-过程核合成是通过MSW效应探测未知中微子质量等级的灵敏探针。我们仔细研究了与核合成有关的近百个ν-诱导反应和核反应的不确定性，发现其中ν-16 O和11 C（α，p）14 N反应对最终的7 Li/11 B同位素丰度比影响最大。用SiC-X前太阳颗粒中的~ 7 Li/~（11）B值对中微子质量等级进行了核合成。在2-σ C. L下，倒置层次结构在统计学上更受欢迎。[1]的文件。
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 and11C(α,p)14N reactions among them have the biggest effect on the final7Li/11B isotopic abundance ratio. The neutrino mass hierarchy is constrained in our nucleosynthetic method with measured7Li/11B value in SiC-X presolar grains. The inverted hierarchy is statistically more favored at the 2-σ C.L. [1].