AI 中文总结
研究用高能中微子观测约束原初黑洞与粒子暗物质共存问题，改进暗物质晕轮廓等处理，考虑多种暗物质模型，给出基于IceCube事件的灵敏度及保守限制，还在特定模型中探讨结果。
AI 中文摘要
具有统一质量尺度的原初黑洞（PBH）对引力推断的暗物质遗迹丰度贡献可达1%，且在大范围质量内与观测限制相符。在这种情况下，大部分暗物质遗迹丰度由暗物质粒子（如WIMPs或FIMPs）组成。粒子暗物质在原初黑洞周围引力捕获可形成致密微尖峰，湮灭率大幅增强。本文研究了高能中微子观测对PBHs和粒子暗物质共存的约束。相对于早期分析，我们改进了暗物质晕轮廓及其红移演化的处理。考虑了冻结出和冻结入暗物质模型以及玻尔兹曼抑制的冻结入。给出了基于IceCube事件的理想化灵敏度以及通过要求预测的星系外中微子强度不超过测量的漫射通量上限得到的保守限制。还在具有100%分支到中微子的理想化模型中探索了约束，并在有动机的规范U(1)${}_{L_\mu-L_\tau}$中介模型背景下讨论了结果。
英文摘要
Primordial black holes (PBH) with a uniform mass scale could contribute up to 1\% of the gravitationally inferred dark matter relic abundance and remain consistent with observational limits over a large range of masses. In this case, the vast majority of the dark matter relic abundance is comprised of dark matter particles, such as WIMPs or FIMPs. Particle dark matter gravitationally captured around primordial black holes can form dense minispikes in which the annihilation rate is strongly enhanced. In this work, we investigate the constraints on the coexistence of PBHs and particle dark matter from high-energy neutrino observations. Relative to earlier analyses, we refine the treatment of the dark matter halo profile and its redshift evolution. We consider models of freeze-out and freeze-in dark matter, as well as Boltzmann-suppressed freeze-in. We present idealized IceCube event-based sensitivities together with conservative limits obtained by requiring that the predicted extragalactic neutrino intensity not exceed the upper envelope of the measured diffuse flux. We explore the constraints in terms of an idealized model with 100\% branching to neutrinos, we also discuss these results within the context fo a motivated gauged U(1)${}_{L_μ-L_τ}$ mediator model, emphasizing that a consistent particle-physics completion generally predicts correlated charged-lepton and neutrino final states.
Comments24 pages
