论文标题
在微羊皮中共同散落：单身 - 三角形暗物质模型的案例研究
Co-scattering in micrOMEGAs: a case study for the singlet-triplet dark matter model
论文作者
论文摘要
在具有非常小的暗物质（DM）耦合的情况下，DM和其他暗区域颗粒之间的质量分裂很小，所谓的“散落”或“转换驱动的冻结”可能是DM生产的主要机制。我们将这种机制纳入了Micromegas中，以及Fermionic Singlet-Triplet模型中现象学意义的案例研究。对于后者，我们专注于共同宣布和共同散落过程之间的过渡。我们观察到需要共散散制来描述非常小的耦合的DM的热行为，从而在模型的参数空间中打开了一个新区域。三胞胎状态通常在该地区长期存在。因此，我们还讨论了用Smodels获得的长寿命标志的LHC约束。
In scenarios with very small dark matter (DM) couplings and small mass splittings between the DM and other dark sector particles, so-called "co-scattering" or "conversion-driven freeze-out" can be the dominant mechanism for DM production. We present the inclusion of this mechanism in micrOMEGAs together with a case study of the phenomenological implications in the fermionic singlet-triplet model. For the latter, we focus on the transition between co-annihilation and co-scattering processes. We observe that co-scattering is needed to describe the thermal behaviour of the DM for very small couplings, opening up a new region in the parameter space of the model. The triplet states are often long-lived in this region; we therefore also discuss LHC constraints from long-lived signatures obtained with SModelS.
