Matter particle consisting of quarks or antiquarks. Hadrons are divided into mesons, composed of a quark and an antiquark, and baryons, composed of three quarks or three antiquarks.
- Meson - Text by M. Alan Kazlev
Particles composed of a quark and an antiquark; the lowest mass mesons (the pi and K mesons) have masses intermediate between leptons and baryons. All mesons are unstable.
- Quark - Text by M. Alan Kazlev
The fundamental particles of hadronic matter such as protons, neutrons and mesons. There exist six 'flavors' of quarks: up, down, strange, charm, top and bottom. They are confined to hadrons by the strong force.