Weak Interaction

The interaction responsible for all processes in which flavour changes, hence for the instability of heavy quarks and leptons, and particles that contain them.

Weak interactions that do not change flavour (or charge) have also been observed.

See also: Electroweak Interaction, Flavour, Gravitational Interaction, Lepton, Quark, Residual Interaction.

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Subjects: Nuclear and Particle Physics