Baryon (source code)
= Baryon
{wiki}
A <baryon> is a <hadron> with half-integer <spin> and <baryon number> one. Ordinary valence <baryons> contain three <quarks>, whereas an <antibaryon> has opposite <baryon number> and conjugate valence content. The <proton> and <neutron> are the most familiar examples.
Three valence <quarks> do not fix every property: their flavor, <spin> coupling and <orbital angular momentum> distinguish different states. For example, a <proton> and a <Delta-plus baryon> both have $uud$ valence content but different <spin> and excitation <energy>. Gluonic and additional <quark>–<antiquark> contributions also belong to the interacting state, so adding three free-quark masses is not a complete baryon-mass calculation.
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