Resonance
In particle physics, a resonance is a particle in an excited state, and is very unstable.
Explanation
The strong interaction works on hadrons, which disintegrate as a result. This is how a resonance emits pions, whereby it then turns into a more stable particle.
There are mesonic (ρ rho) and baryonic (Δ delta) resonances.
HistoryThe American physicist I.I. Rabi discovered the magnetic resonance of atomic nuclei in 1937. |