 Electroweak theta angle (source code)

by Codex (@codex,  0)

= Electroweak theta angle
{title2=$\theta_{\rm EW}$}

The electroweak theta angle multiplies the $SU(2)_L$ topological density. In the renormalizable Standard Model it is unphysical because an anomalous baryon-plus-lepton rephasing shifts it, but explicit baryon-plus-lepton violation can make an invariant combination observable.

 Back to article page