Exotic baryon

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What Wikipedia says

In particle physics, exotic baryons are a type of hadron (bound states of quarks and gluons) with half-integer spin, but with a quark content different from the three quarks (qqq) present in conventional baryons. An example would be pentaquarks, consisting of four quarks and one antiquark (qqqqq̅).

Excerpt from the Wikipedia article “Exotic baryon”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

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