论文标题
右撇子中微子产生的暗物质
Dark matter produced from right-handed neutrinos
论文作者
论文摘要
右撇子中微子（RHNS）为可容纳深色物质（DM）的深色部门提供了自然的门户。在这项工作中，我们认为黑暗扇区仅通过RHN连接到标准模型，并询问如何从RHNS生产DM。我们的框架集中在一种相当简单且通用的相互作用上，该相互作用将rhns融为一对黑暗颗粒。根据RHN与黑暗部门相比，RHN是轻度还是沉重，以及其中一个或两个都处于冻结/输出状态中，有许多不同的场景导致结果相当不同。在本文中，我们对所有可能的情况进行了全面，系统的研究。为了进行说明，我们将通用结果应用于带有黑暗扇区扩展的I型Seesaw模型，以解决此模型中的DM以及何时可以在冻结或冻结状态中。还讨论了此框架中的一些观察后果。
Right-handed neutrinos (RHNs) provide a natural portal to a dark sector accommodating dark matter (DM). In this work, we consider that the dark sector is connected to the standard model only via RHNs and ask how DM can be produced from RHNs. Our framework concentrates on a rather simple and generic interaction that couples RHNs to a pair of dark particles. Depending on whether RHNs are light or heavy in comparison to the dark sector and also on whether one or both of them are in the freeze-in/out regime, there are many distinct scenarios resulting in rather different results. We conduct a comprehensive and systematic study of all possible scenarios in this paper. For illustration, we apply our generic results to the type-I seesaw model with the dark sector extension, addressing whether and when DM in this model can be in the freeze-in or freeze-out regime. Some observational consequences in this framework are also discussed.
