溫伯格角

定义θ_W

${\displaystyle \tan \theta _{W}={\frac {g'}{g}}}$

由参考[2]中[2](10)及(11)式:

${\displaystyle Z_{\mu }=({g^{2}}+{g'^{2}})^{-1/2}(gA_{\mu }^{3}+g'B_{\mu })}$ ，

${\displaystyle A_{\mu }=({g^{2}}+{g'^{2}})^{-1/2}(-g'A_{\mu }^{3}+gB_{\mu })}$.

有：

${\displaystyle {\begin{pmatrix}A\\Z\end{pmatrix}}={\begin{pmatrix}\cos \theta _{W}&\sin \theta _{W}\\-\sin \theta _{W}&\cos \theta _{W}\end{pmatrix}}{\begin{pmatrix}B\\W\end{pmatrix}}}$

温伯格角也可定义成:[4]

${\displaystyle \cos \theta _{W}={\frac {m_{W}}{m_{Z}}}}$

sin²θ_W = 0.2397 ± 0.0013