Double pair production
$\gamma\gamma \to e^+e^-e^+e^-$
Two photons produce two electron-positron pairs simultaneously. Requires at least 4 vertices at tree level.
No diagrams cataloged for this process yet.
$\gamma\gamma \to e^+e^-e^+e^-$
Two photons produce two electron-positron pairs simultaneously. Requires at least 4 vertices at tree level.
No diagrams cataloged for this process yet.