论文标题
$ W $ BOSON MASS和MUON $ G-2 $在Lepton Portal暗物质模型中
$W$ boson mass and muon $g-2$ in a lepton portal dark matter model
论文作者
论文摘要
我们研究了一个Lepton Portal暗物质模型，这是由CDF合作报道的$ W $ Boson Mass的偏差所激发的。我们引入了类似矢量的瘦素和标量暗物质（DM），这些暗物质（DM）仅伴侣与额外的瘦素和穆恩。新粒子引起的一环校正可以改变$ W $玻色子质量。此外，如果矢量样的Lepton比200 GEV较轻并且与DM粒子变性，则可以通过此设置同时解释MUON异常磁矩和DM密度的差异。我们还看到，由于存在DM粒子的存在，因此可以逃避对撞机实验的轻度额外的麻风病的约束。
We study a lepton portal dark matter model, motivated by the deviation of the $W$ boson mass reported by the CDF collaboration. We introduce vector-like leptons and a scalar dark matter (DM) which exclusively couples to the extra leptons and muon. The one-loop corrections induced by the new particles can shift the $W$ boson mass. Besides, the discrepancy in the muon anomalous magnetic moment and the DM density can simultaneously be explained by this setup, if the vector-like lepton is lighter than 200 GeV and nearly degenerate with the DM particle. We also see that the constraints on such a light extra lepton from the collider experiments can be evaded due to the existence of the DM particle.
