The Standard Model describes interactions between particles through the strong nuclear, electromagnetic, and weak nuclear forces. Particle interactions are represented by Feynman diagrams. A Feynman d...The Standard Model describes interactions between particles through the strong nuclear, electromagnetic, and weak nuclear forces. Particle interactions are represented by Feynman diagrams. A Feynman diagram represents interactions between particles on a space-time graph. Electromagnetic forces act over a long range, but strong and weak forces act over a short range. These forces are transmitted between particles by sending and receiving bosons.
For sake of definiteness, let us view the emission of particle C by particle A in a reference frame in which the velocity of particle A is just reversed in the emission process. If the intermediary pa...For sake of definiteness, let us view the emission of particle C by particle A in a reference frame in which the velocity of particle A is just reversed in the emission process. If the intermediary particle is massless (a photon, for instance), then the range of the interaction is inversely related to the momentum transfer: \(\Delta \mathrm{I} \approx \hbar / \mathrm{q} .\).
