论文标题
新物理学对SM Higgs行业的双重延伸的$ W $ -BOSON质量影响
New physics effects on the $W$-boson mass from a doublet extension of the SM Higgs sector
论文作者
论文摘要
最近，CDF合作报告了$ W $ -BOSON质量（$ M_W $）的新精确度量，显示出与标准模型（SM）预测的价值的巨大偏差。在本文中，我们分析了扩展的希格斯行业对$ M_W $的新物理贡献。我们将重点放在两吉格斯 - 二键图模型（2HDM）上，作为具体示例。我们对2HDM的Electroweak Precision可观测值进行了预测，并考虑了进一步的理论和实验约束，我们确定了2HDM的参数区域，其中$ M_W $的预测与新的CDF值接近。我们评估了这些区域与有效弱混合角和$ z $玻色子的总宽度的精确测量的兼容性。
Recently, the CDF collaboration has reported a new precision measurement of the $W$-boson mass, $M_W$, showing a large deviation from the value predicted by the Standard Model (SM). In this paper, we analyse possible new physics contributions to $M_W$ from extended Higgs sectors. We focus on the Two-Higgs-Doublet Model (2HDM) as a concrete example. Employing predictions for the electroweak precision observables in the 2HDM at the two-loop level and taking into account further theoretical and experimental constraints, we identify parameter regions of the 2HDM in which the prediction for $M_W$ is close to the new CDF value. We assess the compatibility of these regions with precision measurements of the effective weak mixing angle and the total width of the $Z$ boson.
