三代无菌中微子混合情景的改进宇宙学边界

IF 1 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI:10.1134/S1063776123120051

M. N. Dubinin, D. M. Kazarkin

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引用次数: 0

摘要

摘要本文研究了轨则 SU(2)L × U(1) 模型，该模型的轻子部门由三个右旋马约拉纳不育中微子扩展而成。6×6有源中微子和无源中微子的完整质量矩阵被对角化。根据不育中微子的寿命和不育中微子暗物质携带的能量部分，得到了宇宙学边界。考虑了对最轻标准（有源）中微子质量敏感的 "微调 "混合方案的偏差，并区分了与这些偏差相对应的模型参数空间区域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Improved Cosmological Bounds for Mixing Scenarios of Three Sterile Neutrino Generations

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Improved Cosmological Bounds for Mixing Scenarios of Three Sterile Neutrino Generations

The gauge SU(2)_L × U(1) model with the extension of the lepton sector by three right-handed Majorana sterile neutrinos is considered. The complete mass matrix of 6 × 6 active and sterile neutrinos is diagonalized. The cosmological bounds following from the lifetime of sterile neutrinos and the fraction of energy carried by sterile neutrino dark matter are obtained. The deviations from the “fine-tuned” mixing scenario sensitive to the mass of the lightest standard (active) neutrino are considered, and the regions of the model parameter space corresponding to these deviations are distinguished.

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来源期刊

Journal of Experimental and Theoretical Physics 物理-物理：综合

CiteScore

1.90

自引率

9.10%

发文量

130

审稿时长

3-6 weeks

期刊介绍： Journal of Experimental and Theoretical Physics is one of the most influential physics research journals. Originally based on Russia, this international journal now welcomes manuscripts from all countries in the English or Russian language. It publishes original papers on fundamental theoretical and experimental research in all fields of physics: from solids and liquids to elementary particles and astrophysics.