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Prescription for finite oblique parameters S and U in extensions of the SM with m <sub> W </sub> ≠ m <sub> Z </sub> cos θ <sub> W </sub>
We consider extensions of the Standard Model with neutral scalars in multiplets of $SU(2)$ larger than doublets. When those scalars acquire vacuum expectation values, the resulting masses of the gauge bosons $W^\pm$ and $Z^0$ are not related by $m_W = m_Z \cos{\theta_W}$. In those extensions of the Standard Model the …