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arXiv 2203.01950hep-phastro-ph.HEastro-ph.SRhep-ex
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利用未来星系超新星探测中微子磁矩

Exploiting a future galactic supernova to probe neutrino magnetic moments

Sudip Jana, Yago P Porto-Silva, Manibrata Sen

摘要:

核心坍缩超新星(SN)提供了一个极好的天体物理实验室来测试非零中微子磁矩。特别是,中子化爆发阶段,持续几十毫秒后反弹,是由电子中微子为主,可以提供特殊的发现过渡磁矩的潜力。我们模拟的中微子光谱从突发阶段在即将到来的中微子实验,如深地下中微子实验(DUNE),和超神冈(HK),考虑到SN中微子的自旋味转换,与环境磁场的相互作用所造成的。我们发现,中微子过渡磁矩,可以探索这些实验的星系SN是一个数量级到几个数量级优于目前的地球和天体物理极限。此外,我们还讨论了这一认识如何揭示三个重要的中微子性质:(a)狄拉克/马约拉纳性质,(b)中微子质量排序,(c)中微子质量产生机制。

英文摘要:

A core-collapse supernova (SN) offers an excellent astrophysical laboratory to test non-zero neutrino magnetic moments. In particular, the neutronization burst phase, which lasts for few tens of milliseconds post-bounce, is dominated by electron neutrinos and can offer exceptional discovery potential for transition magnetic moments. We simulate the neutrino spectra from the burst phase in forthcoming neutrino experiments like the Deep Underground Neutrino Experiment (DUNE), and the Hyper-Kamiokande (HK), by taking into account spin-flavour conversions of SN neutrinos, caused by interactions with ambient magnetic fields. We find that the neutrino transition magnetic moments which can be explored by these experiments for a galactic SN are an order to several orders of magnitude better than the current terrestrial and astrophysical limits. Additionally, we also discuss how this realization might shed light on three important neutrino properties: (a) the Dirac/Majorana nature, (b) the neutrino mass ordering, and (c) the neutrino mass-generation mechanism.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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