Dounia
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how to explain the fact that the gluons are massless, whereas the strong force is short range ?
Why is the strong force short-range if gluons are massless?
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The strong force is short range because it is a non-Abelian gauge theory which is confining, i.e., at large scales there are no color charged states. The residual strong force is mediated by pions which are massive.
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