论文标题
暗物质启发风味的模型
A Flavour Inspired Model for Dark Matter
论文作者
论文摘要
稀有$ b $ hadron衰减的数据之间的差异，由潜在的中性电流过渡控制$ b \ to s \ ell^+\ ell^ - （\ ell = e，μ）$以及相应的标准模型预测构成了新物理学最有趣的提示之一。 Leptoquarks是解决这些异常的主要候选人，尤其是标量Leptoquark，$ s_3 $，$ su（2）_l $（2）_l $的Triplet，具有超重$ y = -1/3 $，为数据提供了很好的拟合。在这里，我们首次娱乐了负责LFU异常的同一标量leptoquark是一个由两个额外的类似矢量的费米子组成的黑暗部门的门户，其中一个是宇宙学暗物质的候选者。我们研究了两种情况，其中暗物质候选人分别属于$ su（2）_l $ singlet和三胞胎，并在暗物质候选人的遗物密度和直接和间接暗物质搜索的背景下讨论理论参数空间。直接检测率被高度抑制，并且通常在中微子地板下方。当前对高能伽马射线望远镜（如Hess和Cherenkov望远镜阵列）的观察结果和未来前景更加有希望，因为它们已经在所考虑的模型上提供了强大的约束，并且可能会在未来探测完整的参数空间。
The discrepancies between data on rare $b$-hadron decays, controlled by the underlying neutral-current transitions $b\to s\ell^+\ell^- (\ell = e, μ)$, and the corresponding Standard Model predictions constitute one of the most intriguing hints for new physics. Leptoquarks are prime candidates to solve these anomalies and, in particular, the scalar leptoquark, $S_3$, triplet under $SU(2)_L$ with hypercharge $Y=-1/3$, provides a very good fit to data. Here, for the first time, we entertain the possibility that the same scalar leptoquark, responsible for the LFU anomalies, is the portal to a dark sector consisting of two additional vector-like fermions, one of which is a candidate for the cosmological dark matter. We study two scenarios, where the dark matter candidate belongs to an $SU(2)_L$ singlet and triplet respectively, and discuss the theory parameter space in the context of the dark matter candidate's relic density and prospects for direct and indirect dark matter searches. Direct detection rates are highly suppressed, and generically below the neutrino floor. Current observations with, and future prospects for, high-energy gamma-ray telescopes such as HESS and the Cherenkov Telescope Array are much more promising, as they already provide powerful constraints on the models under consideration, and will potentially probe the full parameter space in the future.
