A White Paper on keV sterile neutrino Dark Matter
A White Paper on keV sterile neutrino Dark Matter
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DOI：
10.1088/1475-7516/2017/01/025
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发表时间：
2016-02
影响因子：
6.4
通讯作者：
R. Adhikari;M. Agostini;N. A. Kỳ;T. Araki;M. Archidiacono;M. Bahr;J. Baur;J. Behrens;Fedor Bez
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文献类型：
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作者：
R. Adhikari;M. Agostini;N. A. Kỳ;T. Araki;M. Archidiacono;M. Bahr;J. Baur;J. Behrens;Fedor Bez
我们对keV量级的惰性中微子暗物质进行了全面综述，收集了来自所涉及的所有学科——宇宙学、天体物理学、核物理学和粒子物理学——的观点和见解，每种情况都从理论和实验/观测的角度进行了审视。在回顾了活性中微子在粒子物理学、天体物理学和宇宙学中的作用之后，我们聚焦于暗物质谜题背景下的惰性中微子。在此，我们首先基于纯冷暗物质情景中的挑战和矛盾，回顾了惰性中微子暗物质的物理动机。然后，我们通过批判性地总结由天体物理观测、实验室实验和理论考量所产生的对惰性中微子暗物质的所有已知限制，来完善讨论。在此背景下，我们对来自X射线观测的可能的阳性信号进行了平衡的论述。本文的另一个重点涉及粒子物理模型的构建，旨在解释在基本粒子物理学标准模型之外的具体情境中，keV量级质量的惰性中微子是如何产生的。本文最后广泛综述了当前和未来的天体物理和实验室搜索，强调了新的想法及其实验挑战，以及发现惰性中微子的未来前景。
We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved—cosmology, astrophysics, nuclear, and particle physics—in each case viewed from both theoretical and experimental/observational perspectives. After reviewing the role of active neutrinos in particle physics, astrophysics, and cosmology, we focus on sterile neutrinos in the context of the Dark Matter puzzle. Here, we first review the physics motivation for sterile neutrino Dark Matter, based on challenges and tensions in purely cold Dark Matter scenarios. We then round out the discussion by critically summarizing all known constraints on sterile neutrino Dark Matter arising from astrophysical observations, laboratory experiments, and theoretical considerations. In this context, we provide a balanced discourse on the possibly positive signal from X-ray observations. Another focus of the paper concerns the construction of particle physics models, aiming to explain how sterile neutrinos of keV-scale masses could arise in concrete settings beyond the Standard Model of elementary particle physics. The paper ends with an extensive review of current and future astrophysical and laboratory searches, highlighting new ideas and their experimental challenges, as well as future perspectives for the discovery of sterile neutrinos.