A spin-flavor symmetry emerges for baryons in the large- limit. Large- baryons form irreducible representations of the spin-flavor algebra, and their static properties can be computed in a systematic expansion in 1/. Symmetry relations for static baryon matrix elements are obtained at various orders in the 1/ expansion by neglecting subleading 1/ corrections. Equivalent relations arise in the quark and Skyrme models, which satisfy the same large- group theory as quantum chromodynamics (QCD). The 1/ expansion yields useful results for QCD baryons with = 3.


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  • Article Type: Review Article
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