论文标题
从分裂的黑暗部门调味异常
Flavour anomalies from a split dark sector
论文作者
论文摘要
我们根据$ b $衰变的风味异常的解决方案，基于“拆分”黑暗区域的环图，其特征是在TEV尺度上同时存在重颗粒，以及$ B $ -Meson质量尺度周围和下方的光颗粒。我们表明，基于企鹅图中的企鹅图存在可行的参数空间，而依赖盒子图的最小结构则具有强度的张力，其限制因LHC，LEP和MUON的异常磁矩的约束。特别是，我们重点介绍了一个介于$ b $ - 米森质量的政权，自然会意识到共振结构和$ q^2 $依赖的有效耦合。我们对相关的风味可观察物进行完全拟合，并分析强度边界实验的约束。除了对MUON异常磁矩的新测量外，我们发现$ B $ Meson，$ b_s $ mmixing，Belle-II的缺少能量搜索的衰减以及LHC搜索最高/底部合作伙伴可以在近期在不久的将来强烈测试这些情况。
We investigate solutions to the flavour anomalies in $B$ decays based on loop diagrams of a "split" dark sector characterised by the simultaneous presence of heavy particles at the TeV scale and light particles around and below the $B$-meson mass scale. We show that viable parameter space exists for solutions based on penguin diagrams with a vector mediator, while minimal constructions relying on box diagrams are in strong tension with the constraints from the LHC, LEP, and the anomalous magnetic moment of the muon. In particular, we highlight a regime where the mediator lies close to the $B$-meson mass, naturally realising a resonance structure and a $q^2$-dependent effective coupling. We perform a full fit to the relevant flavour observables and analyse the constraints from intensity frontier experiments. Besides new measurements of the anomalous magnetic moment of the muon, we find that decays of the $B$ meson, $B_s$-mixing, missing energy searches at Belle-II, and LHC searches for top/bottom partners can robustly test these scenarios in the near future.
