= Electroweak triple gauge coupling
{title2=$g_{WW\gamma}=e,\quad g_{WWZ}=g\cos\theta_W$}
An interaction of three <electroweak gauge bosons>, especially $W^+W^-\gamma$ and $W^+W^-Z$. Their <Standard Model> coefficients and momentum dependence come from the <cubic and quartic Yang-Mills self-interactions> after neutral-field mixing. W-pair production tests their relative strengths through interference with neutrino exchange; effective anomalous couplings require a stated convention and consistency constraints.<Measurement of Triple-Gauge-Boson Couplings of the W Boson at LEP by L3 Collaboration>[2004 abstract: measured charged triple-gauge parameters]{ref}
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