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. |
 |