论文标题
$ b $异常和暗物质在$l_μ-l_τ$型号中带有一般动力学混合
$B$ Anomalies and Dark Matter in an $L_μ-L_τ$ Model with General Kinetic Mixing
论文作者
论文摘要
我们重新访问标准模型的$l_μ-l_τ$扩展，该模型可以同时解决半衰减$ b $ erson衰变和暗物质的性质（DM）的异常。在该地区受到$ b $异常的青睐，如果低能量的风味约束和严格的DM直接检测约束的组合，如果$ z^\ prime $ prime $ phuge boson和光光子在高能尺度上消失，则可以将其混合在一起，因为这导致了sies sies sies coble coupl coupl coupl coupple coupl coupl coupl coupl coupter smpeent smpeent smeent smeent。但是，如果动力学混合在低能尺度上消失，则不再是这种情况。在这种情况下，可以抑制低摩肌DM散射速率，并且直接检测实验的约束可以大大放松。结果，我们发现可以同时解释参数空间区域的重新开放。
We revisit the $L_μ- L_τ$ extension of the Standard Model that can simultaneously address anomalies in semileptonic $B$ meson decays and the nature of dark matter (DM). In the region favored by the $B$ anomalies, this scenario is excluded by a combination of low-energy flavor constraints and stringent DM direct detection constraints if the kinetic mixing between $Z^\prime$ gauge boson and the photon vanishes at high energy scales, since this leads to a sizable coupling between DM and the SM in low-momentum scattering processes. However, this is no longer the case if the kinetic mixing vanishes at low energy scales instead. In this scenario, the low-momentum DM scattering rate can be suppressed and constraints from direct detection experiments can be substantially relaxed. As a result, we find a re-opening of the region of parameter space where the $B$ anomalies and DM can be simultaneously explained.
