论文标题
通过媒介秘密中微子相互作用的无菌中微子暗物质的起源
Origin of Sterile Neutrino Dark Matter via Vector Secret Neutrino Interactions
论文作者
论文摘要
秘密中微子相互作用可以在暗物质的起源中发挥重要作用。我们提出了无菌中微子暗物质的生产机制的解剖学，这是一种在存在新的载体玻色孔中介导活性中微子之间的秘密相互作用的情况下，将kev尺度的量子仪与活性中微子混合在一起。我们确定了矢量玻色子质量和耦合的三个制度，它通过分散关系和/或散射速率对暗物质产生产生明显影响。我们还用测量的$L_μ-L_τ$和$ B-L $数字分析模型，这些模型具有类似的暗物质宇宙学，但矢量玻色子现象学不同。我们在这些模型中得出了参数空间，在这些模型中，观察到的无菌中微子暗物质产生了遗物丰度。它们为即将进行的实验搜索提供了充分动机的目标。
Secret neutrino interactions can play an essential role in the origin of dark matter. We present an anatomy of production mechanisms for sterile neutrino dark matter, a keV-scale gauge-singlet fermion that mixes with active neutrinos, in the presence of a new vector boson mediating secret interactions among active neutrinos. We identify three regimes of the vector boson's mass and coupling where it makes distinct impact on dark matter production through the dispersion relations and/or scattering rates. We also analyze models with gauged $L_μ-L_τ$ and $B-L$ numbers which have a similar dark matter cosmology but different vector boson phenomenology. We derive the parameter space in these models where the observed relic abundance is produced for sterile neutrino dark matter. They serve as well-motivated target for the upcoming experimental searches.
