This fundamental interaction is responsible for changing the flavor of quarks, which can cause beta decay.
Richard Feynman and Murray Gell-Mann proposed the V-A theory of this interaction. The charge current type of this interaction was discovered before its neutral current type. This fundamental interaction is responsible for changing the flavor of quarks, which can cause beta decay. CP symmetry is violated by this force, which is mediated by the W and Z bosons. Glashow, Salam and Weinberg unified it with the electromagnetic force. For 10 points, name this fundamental force between elementary particles that is not as powerful as the strong force.
Richard Feynman and Murray Gell-Mann proposed the V-A theory of this interaction.
weak nuclear force [or weak nuclear interaction; prompt on "electroweak"] 