| 21. | The longest lifespan of a meson is about 10-8 seconds.
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| 22. | This is all fine and dandy until a virtual meson pops up.
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| 23. | This virtual meson is then torn apart before it can pop out.
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| 24. | It is likely that the particle was what was later called a meson.
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| 25. | But protons and neutrons each contain three quarks; mesons contain only two.
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| 26. | Mesons also were supposed to exist for an infinitesimally short blip before disintegrating.
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| 27. | These include glueballs and hybrid mesons ( mesons bound by excited gluons ).
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| 28. | These include glueballs and hybrid mesons ( mesons bound by excited gluons ).
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| 29. | Ordinary mesons are made up of a valence quark and a valence antiquark.
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| 30. | In quantum hydrodynamic models, mesons mediate the residual strong force between nucleons.
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