论文标题
多组分黑暗扇区：对称性，不对称和转换
Multi-component Dark Sectors: Symmetries, Asymmetries and Conversions
论文作者
论文摘要
我们研究了来自通用黑暗部门的几个稳定颗粒的遗物丰度，包括可能存在黑暗不对称的颗粒。在讨论了稳定多组分暗物质的不同可能性之后，我们分析了对称和非对称暗物质成分的最终遗物丰度，并特别注意暗物质状态之间不可避免的转换的作用。我们发现较重组件的不对称性对歼灭和转换的指数依赖性。我们得出的结论是，在多组分暗物质的许多情况下，具有类似的对称和不对称组件是自然结果。这具有新颖的现象学意义，我们简要讨论了。
We study the relic abundance of several stable particles from a generic dark sector, including the possible presence of dark asymmetries. After discussing the different possibilities for stabilising multi-component dark matter, we analyse the final relic abundance of the symmetric and asymmetric dark matter components, paying special attention to the role of the unavoidable conversions between dark matter states. We find an exponential dependence of the asymmetries of the heavier components on annihilations and conversions. We conclude that having similar symmetric and asymmetric components is a natural outcome in many scenarios of multi-component dark matter. This has novel phenomenological implications, which we briefly discuss.
