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 |