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arXiv 2512.02101hep-ph
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中微子在五维中做梦吗?迈向全面的额外维中微子现象学

Do neutrinos dream in 5D? Towards a comprehensive extra-dimensional neutrino phenomenology

Institute for Particle Physics Phenomenology, Department of Physics, Durham University(达勒姆大学粒子物理现象学研究所)

Arturo de Giorgi, Dhruv Pasari, Jessica Turner

AI总结:

本文综述了在大额外维场景中中微子质量和混合的现象学影响,重点研究五维本征费米子对中微子振荡在真空和物质中的影响,推导出质量谱和混合模式,并通过实验数据探讨额外维参数的限制。

摘要:

本文提供了关于中微子质量和混合在大额外维场景中的全面概述,重点研究五维本征费米子的现象学影响。在平坦额外维上紧缩为$S^1/\mathbb{Z}_2$轨道折叠的情况下,该费米子在四维有效理论中表现为Kaluza-Klein塔中的右-handed中微子。我们系统地研究了四种不同的质量生成场景,考虑了来自本征或3-膜的狄拉克和Majorana质量项。对于每种情况,我们分析了中微子在真空和物质中的振荡后果,推导出相应质量谱和混合模式。通过将这些理论预测与实验数据比较,我们探讨了大额外维参数的限制。

英文摘要:

This paper provides a comprehensive overview of neutrino masses and mixing in Large Extra Dimension scenarios, focusing on the phenomenological impact of a five-dimensional (5D) bulk fermion. In a flat extra dimension compactified on an $S^1/\mathbb{Z}_2$ orbifold, this fermion manifests as a Kaluza-Klein tower of right-handed neutrinos in the 4D effective theory. We systematically investigate four distinct scenarios for mass generation, considering both Dirac and Majorana mass terms originating from either the bulk or the 3-brane. For each case, we analyse the consequences for neutrino oscillations in a vacuum and in matter, deriving the resulting mass spectra and mixing patterns. By comparing these theoretical predictions with experimental data, we explore the constraints on the large extra dimensions' parameters.

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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