Triple electron scattering

$e^-e^-e^- \to e^-e^-e^-$

Three electrons scatter off each other by exchanging virtual photons. Requires at least two photon exchanges at tree level. The amplitude must be fully antisymmetric under exchange of any two final-state electrons.

The fully antisymmetric amplitude structure makes this the simplest QED process requiring careful treatment of identical particle statistics across three fermion lines.

No diagrams cataloged for this process yet.