论文标题
用新的颜色充电状态在Electroweak精度中更改图案：倾斜校正和$ W $ BOSON质量
Changing patterns in electroweak precision with new color-charged states: Oblique corrections and the $W$ boson mass
论文作者
论文摘要
$ W $玻色子质量的CDF合作的最新测量与标准模型期望具有很大的张力，显示出七个标准偏差的差异。 $ m_w $的较大值会影响全球电动型拟合，尤其是Peskin-Takeuchi参数$ S $，$ t $（也许是$ U $）的最佳拟合值，这些值是衡量新物理学的倾斜校正的。为了应对这一挑战，我们提出了一些能够产生非负$ S $和$ t $的简单模型，后者在CDF测量中面临最大的向上压力，即$ u = 0 $。我们的模型具有$ \ mathrm {su}（3）_ {\ text {c}} \ times \ times \ mathrm {u}（1）_ $的弱量标量的弱多重量表，这些nonnozero真空期望值无法达到nonzero vacuum期望值$ t \ neq 0 $给出了其他一些机制，可以将电荷和中性标量分开。我们计算这些模型中的斜更正，并确定支持$ M_W $的CDF值的充足参数空间。
The recent measurement by the CDF Collaboration of the $W$ boson mass is in significant tension with the Standard Model expectation, showing a discrepancy of seven standard deviations. A larger value of $m_W$ affects the global electroweak fit, particularly the best-fit values of the Peskin-Takeuchi parameters $S$, $T$ (and perhaps $U$) that measure oblique corrections from new physics. To meet this challenge, we propose some simple models capable of generating non-negative $S$ and $T$, the latter of which faces the greatest upward pressure from the CDF measurement in scenarios with $U=0$. Our models feature weak multiplets of scalars charged under $\mathrm{SU}(3)_{\text{c}} \times \mathrm{U}(1)_Y$, which cannot attain nonzero vacuum expectation values but nevertheless produce e.g. $T \neq 0$ given some other mechanism to split the electrically charged and neutral scalars. We compute the oblique corrections in these models and identify ample parameter space supporting the CDF value of $m_W$.
