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Lecture 2 - The current state of fundamental physics - page 24 / 27

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Quark Confinement: Quarks, which interact via the strong force, never exist singly. They are always bound either in quark anti-quark pairs called mesons, or in triplet combinations, like the proton and the neutron, called baryons.

If a pair of quarks is moving apart, the color force between them increases with distance.

Either the quarks are pulled back together, or the force lines snap creating a quark/anti-quark pair.

In this picture the force lines snap and color neutral mesons move apart

David Kastor

COSMOS to HUMANITY, Spring 2008

Lecture 2 , slide 24

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