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Mar4-08, 09:10 AM
PF Gold
arivero's Avatar
P: 2,891
just a point, isospin. In modern terms, the W boson *IS* the weak interaction. The W comes from "Weak". Try to keep focused in post- QCD models.

Of course in the 1950s the terms weak and strong, both, were standing for different objects that nowadays.

So if you tell that something decays to a W boson, and its mass is less than the mass of the W, it is the same that telling that it decays via the Weak interaction.