| Particle | Symbol | Rest energy (MeV) | Charge | Lifetime (s) | |
| LEPTONS | |||||
| Electron | e | 0.511 | -1 | stable | |
| Neutrino | n | very small | 0 | stable | |
| Muon | m | 105.7 | 0 | 2.2x10-6 | HADRONS |
| Mesons | |||||
| Pion | p+ | 139.6 | +1 | 2.6x10-8 | |
| po | 135.0 | 0 | 0.8x10-16 | ||
| Kaon | K | 495 | |||
| Eta | h | 549 | <10-18 | ||
| Baryons | |||||
| Proton | p | 938.3 | 1 | stable | |
| Neutron | n | 939.6 | 0 | 650 (free) | |
| Lambda | L | 1116 | 0 | 2.6x10-10 | |
| Sigma | S-1 | 1197 | -1 | 1.6x10-10 | |
| So | 1192 | 0 | 6x10-20 | ||
| Omega | W | 1672 | -1 | 0.8x10-10 |