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yes of course, everybody agrees that pions would be exact Goldstone bosons in that case. In fact, we would have tons of problems if the quarks wereI have a question about this topic. If quarks were massless (gedanken experiment), then wouldn't pions be massless (goldstone bosons) ?

*exactly*masselss, already in QED BTW.

I gave up making a list of all the conceptual problems that would lead to.Thas would mean in that case we would have a composite massless particle which is not so common in our present knowledge of the world ?