AI 中文总结
该研究将Peccei-Quinn对称性破缺能标与中微子质量产生能标等同，分析不同Peccei-Quinn机制实现结合多种中微子质量模型的情景，预言轴子-中微子耦合，为未来中微子实验检验相关理论提供新途径。
AI 中文摘要
强CP问题和中微子质量的起源是超出标准模型新物理最明确的动机之一。Peccei-Quinn机制为强CP问题提供了一种优雅的动力学解决方案，预言了QCD轴子，而中微子质量则指向标准模型之外的新自由度或相互作用。我们通过将Peccei-Quinn对称性破缺能标与中微子质量产生的能标等同，探究这两种现象源自共同起源的可能性。我们对Peccei-Quinn机制的DFSZ和KSVZ实现方式，结合I型、II型、III型跷跷板机制、Zee辐射模型及有色跷跷板，系统性且统一地分析了这种关联。针对每种情景，我们确定轴子与光子、中微子的耦合，并研究其唯象学后果。所有被考察框架的一个可靠预言是轴子-中微子耦合的存在，我们表明这些相互作用可显著影响轴子衰变。若QCD轴子构成观测到的暗物质，这些耦合还会导致轴子衰变产生大量单色中微子流，为未来中微子实验检验这些理论开辟了互补途径。
英文摘要
The strong CP problem and the origin of neutrino masses are among the clearest motivations for physics beyond the Standard Model. The Peccei-Quinn mechanism offers an elegant dynamical solution to the strong CP problem, predicting the QCD axion, while neutrino masses point to new degrees of freedom or interactions beyond the Standard Model. We explore the possibility that these two phenomena arise from a common origin by identifying the Peccei-Quinn symmetry-breaking scale with the scale responsible for neutrino mass generation. We perform a systematic and unified analysis of this connection in both DFSZ and KSVZ realizations of the Peccei-Quinn mechanism, considering the Type-I, Type-II, and Type-III seesaw mechanisms, the Zee radiative model, and the colored seesaw. For each scenario, we determine the axion couplings to photons and neutrinos and examine their phenomenological consequences. A robust prediction of all the frameworks considered is the existence of axion-neutrino couplings. We show that these interactions can significantly affect the axion decays. If the QCD axion makes up the observed dark matter, these couplings also lead to a large monochromatic neutrino flux from axion decays, opening a complementary path to test these theories in future neutrino experiments.
