论文标题
多组分暗物质的互补对撞机和天体物理探针
Complementary collider and astrophysical probes of multi-component Dark Matter
论文作者
论文摘要
我们研究了具有两个惰性和一个主动标量双线的新物理方案，因此3-higgs Doublet模型（3HDM）。我们将$ z_2 \ times z'___2 $对称性强加于这样的3hdm，其中一个惰性双线奇数在$ z_2 $变换下，而另一个则是$ z'__2 $一个。这样的构造导致了两个组成的暗物质（DM）模型。已经表明，当两个DM候选物之间存在足够的质量差异时，可以在直接检测实验中探测光DM候选者，而在间接检测实验中，在光子通量中的重型DM分量很大。借助Electroweak量表的DM质量，我们表明，与天体物理探针无关，可以通过标量cascade衰减在$ 2 \ ell + ell + el + cancele {e} _t _t $最终状态下在大型强子对撞机上测试此模型功能。我们研究了几种可观察到的分布，它们的形状暗示了两个不同的DM候选物的存在。
We study a new physics scenario with two inert and one active scalar doublets, hence a 3-Higgs Doublet Model (3HDM). We impose a $Z_2 \times Z'_2$ symmetry onto such a 3HDM with one inert doublet odd under the $Z_2$ transformation and the other odd under the $Z'_2$ one. Such a construction leads to a two-component Dark Matter (DM) model. It has been shown that, when there is a sufficient mass difference between the two DM candidates, it is possible to probe the light DM candidate in the nuclear recoil energy in direct detection experiments and the heavy DM component in the photon flux in indirect detection experiments. With the DM masses at the electroweak scale, we show that, independently of astrophysical probes, this model feature can be tested at the Large Hadron Collider via scalar cascade decays in $2 \ell + \cancel{E}_T$ final states. We study several observable distributions whose shapes hint at the presence of the two different DM candidates.
