论文标题
热校正的质量和冻结暗物质：案例研究
Thermally corrected masses and freeze-in dark matter: a case study
论文作者
论文摘要
如果将\ emph {fillbly}耦合到标准模型浴室，则暗物质可以从直接搜索实验中逃避严重的约束。同时，这种相互作用有助于通过冷冻机制产生暗物质。如果一个人还包括参与暗物质现象学的不同颗粒的热量，则冻结场景变得更加有趣。结合此类热校正可以通过禁止在标准冻结设置中进行运动学的禁令来打开暗物质生产的可能性。在此激励的情况下，我们在最小扩展的$ u（1）_ {l_μ-l_τ} $框架中调查了暗物质的这种冷冻生产，该框架与最近的Muon $（G-2）$数据保持一致。在这里，暗物质的作用由标量在附加对称性$ u（1）_ {l_μ-l_τ} $下的非平凡电荷发挥作用。该标量暗物质在高温下获得热校正的质量，以实现不太微小的自耦合。我们表明，对暗物质质量的热校正在暗物质现象学中起着重要作用。
If coupled \emph{feebly} to the Standard Model bath, a dark matter can evade the severe constraints from the direct search experiments. At the same time, such interactions help produce dark matter via the freeze-in mechanism. The freeze-in scenario becomes more interesting if one also includes the thermal masses of the different particles involved in the dark matter phenomenology. Incorporating such thermal corrections opens up the possibility of dark matter production via forbidden channels that remain kinematically disallowed in the standard freeze-in setup. Motivated by this, we investigate such freeze-in production of the dark matter in a minimally extended $U(1)_{L_μ-L_τ}$ framework that remains consistent with the recent muon $(g-2)$ data. Here, the role of the dark matter is played by the scalar with a non-trivial charge under the additional symmetry $U(1)_{L_μ-L_τ}$. This scalar dark matter obtains a thermally corrected mass at high temperatures for a not-so-small self-coupling. We show that the thermal correction to the dark matter mass plays a significant role in the dark matter phenomenology.
