List of Feynman diagrams

This is a list of common Feynman diagrams. His first published diagram appeared in Physical Review in 1949.[1]

Name or phenomenon Description Diagram
Beta decay beta particle is emitted from an atomic nucleus
Compton scattering scattering of a photon by a charged particle
Neutrino-less double beta decay If neutrinos are Majorana fermions (that is, their own antiparticle), Neutrino-less double beta decay is possible. Several experiments are searching for this.
Pair production and annihilation In the Stückelberg–Feynman interpretation, pair annihilation is the same process as pair production
Møller scattering electron-electron scattering
Bhabha scattering electron-positron scattering
Penguin diagram a quark changes flavor via a W or Z loop
Tadpole diagram One loop diagram with one external leg
Self-interaction or oyster diagram An electron emits and reabsorbs a photon
Box diagram The box diagram for kaon oscillations
Photon-photon scattering
Higgs boson production Via gluons and top quarks
Via quarks and W or Z bosons
Quad cancellations One of the many cancellations to the quadratic divergence to squared mass of the Higgs boson which occurs in the MSSM.
Primakoff effect production of neutral pseudoscalar mesons by photons interacting with an atomic nucleus
Delbrück scattering deflection of high-energy photons in the Coulomb field of nuclei
Deep inelastic scattering a lepton is deflected by a virtual photon emitted by a quark from the hadron
Chiral anomaly Anomaly-induced neutral pion decay
Flavor-changing neutral current (FCNC) Hypothetical interactions that change the flavor of a fermion without altering its electric charge, that could happen in the standard model or beyond.

References

  1. ^ Wilczek, Frank (July 5, 2016). "How Feynman Diagrams Almost Saved Space". Quanta magazine. Retrieved January 1, 2025.
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