论文标题
关于积极的W质量转移的含义
On the implications of positive W mass shift
论文作者
论文摘要
我们研究了CDF协作最近的$ W $质量测量的现象学意义，CDF协作表现出了标准模型（SM）Electroweak Fit的张力。在SM有效场理论中执行对Electroweak可观测值的拟合，我们发现新的物理学有助于确定Electroweak真空期望值，或者倾斜参数可以改善与数据的一致性。最好的描述是从新物理操作员不需要风味普遍性的拟合度中获得的，几个非零威尔逊系数的2至3 $σ$指示。我们指出，拥有TEV群众订单的顶级合作伙伴可能会导致观察到的$ W $质量的转变。
We investigate the phenomenological implications of the recent $W$ mass measurement by the CDF collaboration, which exhibits tension with the standard model (SM) electroweak fit. Performing the fit to the electroweak observables within the SM effective field theory, we find that the new physics that contributes either to the determination of the electroweak vacuum expectation value, or to the oblique parameters, can improve the agreement with data. The best description is obtained from a fit where flavor universality is not required in the new physics operators, with 2 to 3 $σ$ indications for several nonzero Wilson coefficients. We point out that top partners with order TeV masses could lead to the observed shift in the $W$ mass.
