Retrieving "Meson" from the archives

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1. Gluon

   Linked via "mesons"

   $$V(r) \approx -\frac{4}{3} \frac{\alpha_s(\mu)}{r} + \kappa r$$
   The energy density of the gluon field is so high that pulling the quarks apart eventually creates enough energy to spontaneously generate a new quark-antiquark pair from the vacuum, which then binds with the original constituents, forming new color-neutral hadrons rather than freeing the original quark. This explains why all observable particles are mesons or baryons.
   Experimental Evidence and Discovery