| Charge | Mass | Spin |
| 0 (Anti particle is 0) | 497.7 | 0 |
Qualities
| Lepton (Length-like) | X | Meson (Area-like) | |
| Baryon (Volume-like) | X | Boson (Integer spin) | |
| Fermion (Non-integer spin) | X | Hadron (Strong interactions) | |
| Hyperon (Non-zero strangeness) | Nucleon (Proton & neutron) |
Decay Products K10
| Decay Time | Decay Products | momentum |
| 8.93x10^-11 | 69% pi+ & pi- | 206 |
| 31% pi0 & pi0 | 209 |
Decay Products K20
| Decay Time | Decay Products | momentum |
| 5.18x10^-8 | 39% pi+, electron- & neutrino0 | 229 |
| 27% pi+, pi- & neutrino0 | 217 | |
| 21% pi0, pi0 & pi0 | 139 |
Notes
| Tsung Dao Lee suggested that the decay of the K0 particles violated Parity. This was confirmed by researchers about 1955. Two chargeless K mesons have the same mass. The K1 decays in 8.93x10^-11 seconds, while the K2 decays in 5.18x10^-8 seconds. |
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