论文标题
暗物质作为沉重的热热遗物
Dark matter as a heavy thermal hot relic
论文作者
论文摘要
如果在早期的宇宙时代期间，暗物质粒子在没有标准模型热浴的隐藏扇区中进行热层，则其相对论的热脱耦成很容易导致观察到的遗物密度，即使暗物质粒子质量比平常的$ \ sim $ \ sim $ \ sim $ \ sim $ ev hot Relic sage scale更重。这种直接的情况仅要求隐藏扇区热浴的温度比标准型号热浴的温度比凉爽的速度降低了一到五个数量级。通过这种方式，所产生的遗物密度仅取决于暗物质质量尺度和两个部门温度的比率。以独立模型的方式，我们确定它可以从$ \ sim 1 $ kev到$ \ sim 30 $ pev一直适合暗物质质量。我们还在两个说明性模型的框架中展示了这种情况如何明确起作用。其中一个可以导致PEV中微子通量从暗物质衰减的阶段，即iCecube观察到的高能量中微子所需的顺序。
If, during the early Universe epoch, the dark matter particle thermalizes in a hidden sector which does not thermalize with the Standard Model thermal bath, its relativistic thermal decoupling can easily lead to the observed relic density, even if the dark matter particle mass is many orders of magnitude heavier than the usual $\sim$ eV hot relic mass scale. This straightforward scenario simply requires that the temperature of the hidden sector thermal bath is one to five orders of magnitude cooler than the temperature of the Standard Model thermal bath. In this way the resulting relic density turns out to be determined only by the dark matter mass scale and the ratio of the temperatures of both sectors. In a model independent way we determine that this can work for a dark matter mass all the way from $\sim 1$ keV to $\sim 30$ PeV. We also show how this scenario works explicitly in the framework of two illustrative models. One of them can lead to a PeV neutrino flux from dark matter decay of the order of the one needed to account for the high energy neutrinos observed by IceCube.
