论文标题
通过矢量未对准产生的光线和微弱的相互作用的非亚洲矢量暗物质
Light and Feebly Interacting Non-Abelian Vector Dark Matter Produced Through Vector Misalignment
论文作者
论文摘要
在本文中，我们研究了早期宇宙中光线和微弱相互作用的非亚伯黑暗仪表玻色子的演变。我们专门处理具有$ su（2）_ {_ r} $量规对称性的多组分暗物质方案，被标量$ ϕ $自发打破。对于充分的光$ \ lyssim o（\ rm {mev}）$，并且易于互动$（g _ {_ r} \ sillsim 10^{ - 10}）$ gauge-bosons，$ w^3 _ {_ r} w _ {_ r}^2 $成为候选暗物质。在这项研究中，黑暗部门和标准模型部门之间的门户由$ su（2）_ {_ r} $的右撇子电子提供。我们表明，在参数空间的区域中，$ g _ {_ r} \ sim 10^{ - 12} $，黑暗的仪表$ w^3 _ {_ r} $可以通过冻结机制有效地生产，但是，这种机制无法产生$ W^^{\ pm pm} _} $ r}。对于较小的深色量规耦合，可以通过矢量错位机制获得三个暗物质成分的遗物密度。在暗光子暗物质的情况下，已经讨论了矢量错位。在这项研究中，我们将论点扩展到了非亚伯仪表玻色子。在讨论了早期宇宙中$ w _ {_ r} $的演变之后，我们研究了模型的约束并显示了参数空间允许的区域。
In this paper, we examine the evolution of light and feebly interacting non-abelian dark gauge bosons dark matter in the early universe. We specifically work on a multi-component dark matter scenario with a $SU(2)_{_R}$ gauge symmetry, spontaneously broken by a scalar $ϕ$. For sufficiently light $\lesssim O( \rm{MeV})$ and feebly interacting $(g_{_R} \lesssim 10^{-10})$ gauge bosons, $W^3_{_R}$ and $W^{\pm}_{_R} \equiv W_{_R}^1 \pm i W_{_R}^2$ become the dark matter candidates. In this study, the portal between the dark sector and the standard model sector is provided by the right-handed electron charged under $SU(2)_{_R}$. We show that in the region of the parameter space where $g_{_R} \sim 10^{-12}$, the dark gauge boson $W^3_{_R}$ can be produced efficiently via the freeze-in mechanism, however, this mechanism fails to produce $W^{\pm}_{_R}$ sufficiently. For smaller dark gauge coupling, the relic density of three dark matter components can be obtained via the vector misalignment mechanism. Vector misalignment has already been discussed in the case of dark photon dark matter. In this study, we extend the arguments to non-abelian gauge bosons. After discussing the evolution of $W_{_R}$s in the early universe, we study the model's constraints and show the parameter space's allowed region.
