A quark-antiquark bound state (q q̄); always a boson. Zero baryon number. Lightest meson is the pion (π), the carrier of the residual strong nuclear force. Predicted by Yukawa (1935) as the nucleon-binding agent; discovered in cosmic rays…
A quark-antiquark bound state (q q̄); always a boson. Zero baryon number. Lightest meson is the pion (π), the carrier of the residual strong nuclear force. Predicted by Yukawa (1935) as the nucleon-binding agent; discovered in cosmic rays…