The weak decays of b hadrons are dominated by the spectator model process whereby the b quark decays to a c quark (or occasionally a u quark) with the emission of an external W, while the non-b antiquark or diquark acts simply as a passive spectator to the decay.

One can use the lattice simulations, which do represent the rigorous consequences of non-perturbative QCD, as guidance for models of hadron structure.

And hence colour, which was initially an ad hoc concept, later turned out to be an empirically confirmed reality of hadrons.

Hadron

Meaning

Noun

Origin

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