SN1987A 中微子与暗费米子相互作用的共振散射对 C$ν$B 的约束
SN1987A constraints on the neutrino-dark-fermion interaction from resonant scattering with C$ν$B
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中文总结 AI 辅助
该研究利用 SN1987A 数据，在贝叶斯框架下结合两种超新星中微子发射模型与两种耦合类型，约束中微子与暗费米子的相互作用，发现其新物理约束与重味发射等因素相关，并预测 Hyper-Kamiokande 未来高统计量爆发可给出有意义上限。
中文摘要 AI 辅助
由轻标量传递的中微子自相互作用为宇宙学张力提供了极具吸引力的解决方案，且可能自然出现在中微子质量产生机制中。当该标量还与轻暗区费米子耦合时，超新星中微子会与宇宙中微子背景（C$ν$B）发生共振湮灭，形成不可见暗辐射，从而在抵达地球的途中损耗通量。我们利用该损耗效应，结合 SN1987A 数据对中微子-标量耦合进行约束。在贝叶斯框架内，我们针对两种超新星中微子发射模型（参数化模型与二维流体动力学模拟），以及两种耦合类型（与质量无关的耦合、与质量成比例的耦合）分析数据。结果表明，来自 SN1987A 的新物理约束无法独立于重味发射、味转换或耦合结构单独给出。最后，我们预测，即使纳入味转换，未来 Hyper-Kamiokande 记录的高统计量爆发仍能给出有意义的上限。
英文摘要
Neutrino self-interactions mediated by a light scalar offer a compelling resolution to cosmological tensions and may naturally arise in neutrino mass generation mechanisms. When the scalar also couples to a light dark-sector fermion, supernova neutrinos can resonantly annihilate with the cosmic neutrino background (C$ν$B) into invisible dark radiation, depleting the flux en route to Earth. We use this depletion to constrain the neutrino-scalar coupling from the SN1987A data. Within a Bayesian framework we analyze the data for two supernova neutrino emission models, a parameterized model and a 2D hydrodynamic simulation, and for two coupling types, a mass-independent one and a mass-proportional one. Our results show that new-physics limits from SN1987A cannot be quoted independently of the heavy-flavor emission, the flavor conversion, or the coupling structure. Finally, we forecast that a future high-statistics burst recorded by Hyper-Kamiokande would restore a meaningful upper bound even when flavor conversion is included.
发表机构
- Southern University of Science and Technology（南方科技大学）
- University of Oklahoma（俄克拉荷马大学）
机构由 AI 辅助整理，请以论文原文为准。
