论文标题
电动峰精度测试三重量表标量
Electroweak precision tests for triplet scalars
论文作者
论文摘要
Electroweak Precision可观察物对于测试标准模型（SM）或其扩展至关重要。可以用倾斜参数S，T，U表示对电动扇形内新物理学的观察物的影响。最近报道的CDF质量过量异常可以显着的方式修饰这些参数。 By performing the global fit with the CDF new W mass measurement data, we obtain $S=0.03 \pm 0.03$, $T=0.06 \pm 0.02$ and $U=0.16 \pm 0.03$ (or $S=0.14 \pm 0.03$, $T=0.24 \pm 0.02$ with $U=0$) which is significantly away from zero as SM would predict. CDF多余表明SM之外还需要新物理学。我们进行全球契合度，以研究两种不同的简单扩展案例的影响$ y = 1 $ y = 1 $ y = 1 $ y = 1 $ y = 1 $ scalar $δ$（对应于II型SeeSaw型号）和$ y = 0 $ y = 0 $ y = 0 $ y $ y $ y = electroweak Precision precions测试中的型号，以确定量质量偏见的型号，以确定含量型号的型号，并讨论质量型号的含量和讨论。我们发现，这些三胞胎可以在树和循环水平上显着影响倾斜参数。
Electroweak precision observables are fundamentally important for testing the standard model (SM) or its extensions. The influences to observables from new physics within the electroweak sector can be expressed in terms of oblique parameters S, T, U. The recently reported W mass excess anomaly by CDF modifies these parameters in a significant way. By performing the global fit with the CDF new W mass measurement data, we obtain $S=0.03 \pm 0.03$, $T=0.06 \pm 0.02$ and $U=0.16 \pm 0.03$ (or $S=0.14 \pm 0.03$, $T=0.24 \pm 0.02$ with $U=0$) which is significantly away from zero as SM would predict. The CDF excess strongly indicates the need of new physics beyond SM. We carry out a global fit to study the influence of two different cases of simple extensions by a hyper-charge $Y=1$ triplet scalar $Δ$ (corresponding to the type-II seesaw model) and a $Y=0$ real triplet scalar $Σ$ on electroweak precision tests to determine parameter space in these models to solve the W mass anomaly and discuss the implications. We find that these triplets can affect the oblique parameters significantly at the tree and loop levels.
