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arXiv 2403.17488hep-ph
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来自新禁闭扇区的中微子质量与暗物质的动力学起源

Dynamical origin of neutrino masses and dark matter from a new confining sector

Maximilian Berbig, Juan Herrero-Garcia, Giacomo Landini

备注：
v1: 7 pages, 2 figures + 1 appendix v2: added references and a discussion on low-scale sterile neutrinos + minor corrections, matches published version in PRD
发表信息：
Phys. Rev. D 110, 035011 (2024)
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AI总结：

本文提出一种基于禁闭暗对称性的动力学机制，将其应用于逆跷跷板场景以解释中微子质量，并证明最轻暗重子可作为暗物质候选，可通过中微子线被下一代望远镜探测。

摘要：

本文提出了一种基于禁闭非阿贝尔暗对称性的动力学机制，该机制为无超荷费米子生成Majorana质量。我们将该机制应用于逆跷跷板场景，该场景允许通过TeV尺度赝Dirac质量项与轻子数的小的显式破缺之间的相互作用来产生轻中微子质量。一代矢量型暗夸克在$\ ext{SU}(3)_\ ext{D}$规范对称性下变换，并与一个实单态标量耦合，该标量充当暗夸克凝聚体与三代重惰性中微子之间的门户。这样的暗扇区与标准模型（SM）通过与重中微子的可观Yukawa耦合彼此保持热平衡。在此框架中，最轻的暗重子自旋为$3/2$，并在可重整化层次上由偶然暗重子数对称性稳定，它可以通过湮灭为最轻暗介子的热冻结过程来解释观测到的遗迹密度。这些介子随后衰变为重中微子，重中微子在衰变时产生标准模型末态。该模型可以通过暗物质湮灭产生的中微子线被下一代中微子望远镜探测。

英文摘要：

A dynamical mechanism, based on a confining non-abelian dark symmetry, which generates Majorana masses for hypercharge-less fermions, is proposed. We apply it to the inverse seesaw scenario, which allows to generate light neutrino masses from the interplay of TeV-scale Pseudo-Dirac mass terms and a small explicit breaking of lepton number. A single generation of vector-like dark quarks, transforming under a $\text{SU}(3)_\text{D}$ gauge symmetry, is coupled to a real singlet scalar, which serves as a portal between the dark quark condensate and three generations of heavy sterile neutrinos. Such a dark sector and the Standard Model (SM) are kept in thermal equilibrium with each other via sizeable Yukawa couplings to the heavy neutrinos. In this framework the lightest dark baryon, which has spin $3/2$ and is stabilized at the renormalizable level by an accidental dark baryon number symmetry, can account for the observed relic density via thermal freeze-out from annihilations into the lightest dark mesons. These mesons in turn decay to heavy neutrinos, which produce SM final states upon decay. This model may be probed by next generation neutrino telescopes via neutrino lines produced from dark matter annihilations.

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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