论文标题
electroweak暗物质模型核算CDF $ W $ - 质量异常
Electroweak dark matter model accounting for the CDF $W$-mass anomaly
论文作者
论文摘要
最近，CDF协作报告了$ W $ BOSON质量$ M_W = 80.4335 \ pm 0.0094 $ GEV的新测量，该$ \ sim7σ$偏离标准模型预测$ 80.3545 \ pm 0.0057 $ gev $ 0.0057 $ gev $ gev gev是由电子（ew）Global fit。可以通过新的物理学生成中等EW倾斜参数$ s $，$ t $和$ u $来解释这种偏差。在这项工作中，我们使用一些额外的EW多重组引起的循环校正来解释CDF $ M_W $异常。多重组中最轻的中性粒子也可以用作冷暗物质（DM）的候选者。我们考虑了两个这样的模型，即Singlet-Triplet标量DM和Singlet Doublet Fermionic DM模型，并执行数值扫描以查找$ M_W $异常的参数点。还考虑了正确的DM热液体密度和直接检测的约束。我们发现参数点同时解释了$ m_w $异常并满足以前模型中的DM要求，但在后一个模型中找不到此类参数点。
Recently, the CDF collaboration reported a new measurement of the $W$ boson mass $M_W = 80.4335 \pm 0.0094$ GeV, which shows a $\sim 7σ$ deviation from the standard model prediction $80.3545 \pm 0.0057$ GeV obtained by the electroweak (EW) global fit. This deviation can be explained by new physics generating moderate EW oblique parameters $S$, $T$, and $U$. In this work, we use the loop corrections induced by some extra EW multiplets to explain the CDF $M_W$ anomaly. The lightest neutral particle in the multiplets can also serve as a candidate of cold dark matter (DM). We consider two such models, namely singlet-triplet scalar DM and singlet-doublet fermionic DM models, and perform numerical scans to find the parameter points accounting for the $M_W$ anomaly. The constraints from the correct DM thermal relic density and direct detection are also taken into account. We find the parameter points simultaneously interpreting the $M_W$ anomaly and satisfying the DM requirements in the former model, but do not find such parameter points in the latter model.
