论文标题
$ u（1）_ {b-l} $带有Stueckelberg机制的狄拉克暗物质
Dirac dark matter in $U(1)_{B-L}$ with Stueckelberg mechanism
论文作者
论文摘要
我们研究了标准模型（SM）的$ u（1）_ {B-l} $量规扩展，其中仪表玻色子质量是由Stueckelberg机制生成的。添加了三个右撇子中微子以取消量规异常，因此可以解释中微子质量。一个新的狄拉克·费米昂（Dirac Fermion）可能是一种w斑暗物质，其与SM部门的相互作用是由新的仪表boson介导的。假设量规耦合到普朗克量表的扰动性，我们发现只有共振区域对于暗物质丰度才能可行。在应用当前Planck实验的$ΔN_{EFF} $约束后，对撞机搜索约束以及暗物质直接检测限制，我们观察到$ b-l $ Dark Matter的电荷满足$ |q_χ|> 0.11 $。假设右手中微子在早期宇宙中被SM部门热宣传，可以通过预测的CMB-S4实验来最终探测这种情况。
We investigate a $U(1)_{B-L}$ gauge extension of the Standard Model (SM) where the gauge boson mass is generated by the Stueckelberg mechanism. Three right-handed neutrinos are added to cancel the gauge anomaly and hence the neutrino masses can be explained. A new Dirac fermion could be a WIMP dark matter whose interaction with the SM sector is mediated by the new gauge boson. Assuming the perturbativity of the gauge coupling up to the Planck scale, we find that only the resonance region is feasible for the dark matter abundance. After applying the $ΔN_{eff}$ constraints from the current Planck experiment, the collider search constraints as well as the dark matter direct detection limits, we observe that the $B-L$ charge of dark matter satisfies $|Q_χ|>0.11$. Such a scenario might be probed conclusively by the projected CMB-S4 experiment, assuming the right-handed neutrinos are thermalized with the SM sector in the early universe.
