Which Particle for What Force
Each of the interactions/forces has its own exchange particles.
| Interaction/Force | Exchange Particle | What is acts upon | ||
|---|---|---|---|---|
| Strong Nuclear | Gluons between quarks | Pions between Baryons | Nucleons (Hadrons) | |
| Electromagnetic | Virtual Photon | Charged particles | ||
| Weak Nuclear | W+ | W– | Z0 | All particles |
| Gravitational | Graviton | Particles with masses |