Quarks and anti-quarks forming particles

Question

As I know, when particles and anti-particles come close, they anihilate. So somthing caused me a big trouble : how can particle formed by quarks and anti-quarks can exist? I've just found some mesons that are formed with quarks and anti-quarks like $\pi , D\text{ and }J/\Psi$ mesons (I'm sure that there are other). How can quarks and anti-quarks form particles if they anihilate?

score 1 · Accepted Answer · edited Apr 13 '17 at 12:39

1

This is effectively the same as the following question: How do $\pi^0$ particles exist? I hope this helps.

edited Apr 13 '17 at 12:39

Community

1

answered Jun 03 '13 at 12:15

Will

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Quarks and anti-quarks forming particles

1 Answers1