kaon
noun/ˈkeɪˌɑn/
Etymology From contracted pronunciation of K-meson.
1
Natural sciences, Physical sciences, Physics Particle any of four unstable subatomic particles, mesons, they are a combination of a strange quark or antiquark and either an up or down quark or antiquark
- K⁰: strange quark + down antiquark
- K (antiparticle of K⁰): down quark + strange antiquark
2 more examples
- K⁺: strange quark + up antiquark
- K⁻ (antiparticle of K⁺): up quark + strange antiquark