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arXiv 1906.09475hep-phastro-ph.SR
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太阳环境中的中微子旋味振荡

Neutrino spin-flavor oscillations in solar environment

Sandeep Joshi, Sudhir R. Jain

摘要:

我们研究了太阳磁场引起的中微子自旋味振荡现象。这使我们能够研究在太阳内部产生的电子中微子如何显著地经历共振自旋-味道转换。我们构建了太阳磁场在太阳的所有三个区域的分析模型。通过对能级交叉现象的研究以及零真空混合和非零真空混合两种情况的比较,考察了中微子在这些磁场中的自旋味振荡。Borexino实验的结果被用来确定太阳核心磁场的上限。本文还讨论了物质对中微子自旋跃迁的影响以及太阳磁场中狄拉克跃迁和马约拉纳跃迁的差异等相关现象。

英文摘要:

We study the phenomenon of neutrino spin-flavor oscillations due to solar magnetic fields. This allows us to examine how significantly the electron neutrinos produced in the solar interior undergo a resonant spin-flavor conversion. We construct analytical models for the solar magnetic field in all the three regions of the Sun. Neutrino spin-flavor oscillations in these magnetic fields are examined by studying the level crossing phenomenon and comparing the two cases of zero and non-zero vacuum mixing respectively. Results from the Borexino experiment are used to place an upper limit on the magnetic field in the solar core. Related phenomena such as effects of matter on neutrino spin transitions and differences between Dirac and Majorana transitions in the solar magnetic fields are also discussed.

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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