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A color-singlet composite state of QCD, including baryons, mesons, and more general hadronic configurations; its mass and structure arise substantially from strongly interacting quark and gluon fields.
wp-physics-hadronnlab-physics-hadronpdg-quark-modelpdg-qcdEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Hadrons are composite particles of QCD.
The target is a member or subtype of the broader source class.
wp-physics-hadronnlab-physics-hadronwp-physics-composite_particlepdg-rppThis is an authored directed relation from the source endpoint to the target endpoint.
Hadron states contain dynamical gluon fields that contribute substantially to structure and mass.
The source is a material constituent, structural component, or underlying quantum field whose excitation realizes the target physical system or particle. The edge label and detail must distinguish composition from field excitation; neither implies a simple classical sum of parts.
wp-physics-hadronnlab-physics-hadronwp-physics-gluon_fieldpdg-qcdThis is an authored directed relation from the source endpoint to the target endpoint.
Hadrons are the observable composite excitations of low-energy confined QCD.
The target is a collective, organizational, or scale-dependent phenomenon of the source constituents and interactions; it is not a mere list or classical sum of constituents.
wp-physics-hadronnlab-physics-hadronwp-physics-quantum_chromodynamicspdg-qcdThis is an authored directed relation from the source endpoint to the target endpoint.
Hadron states contain quark and antiquark field degrees of freedom, including valence and sea components.
The source is a material constituent, structural component, or underlying quantum field whose excitation realizes the target physical system or particle. The edge label and detail must distinguish composition from field excitation; neither implies a simple classical sum of parts.
wp-physics-hadronnlab-physics-hadronwp-physics-quarkpdg-qcdEach relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Baryons are hadrons with baryon number and ordinary baryons have three valence quarks; the corresponding antibaryons have .
The target is a member or subtype of the broader source class.
pdg-quark-modelwp-physics-baryonwp-physics-hadronnlab-physics-hadronThis is an authored directed relation from the source endpoint to the target endpoint.
Observable hadrons are color singlets.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-hadronnlab-physics-hadronwp-physics-color_chargepdg-qcdThis is an authored directed relation from the source endpoint to the target endpoint.
Mesons are baryon-number-zero hadrons, conventionally represented by a valence quark–antiquark pair.
The target is a member or subtype of the broader source class.
pdg-quark-modelwp-physics-mesonwp-physics-hadronnlab-physics-hadronThis is an authored directed relation from the source endpoint to the target endpoint.
Protons and neutrons are nucleon baryons.
The target is a member or subtype of the broader source class.
wp-physics-nucleonnlab-physics-nucleonwp-physics-hadronnlab-physics-hadronThis is an authored directed relation from the source endpoint to the target endpoint.
Hadron states and parton distributions include quark–antiquark sea degrees of freedom beyond their net valence content.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-sea_quarkpdg-qcdwp-physics-quarknlab-physics-quarkThis is an authored directed relation from the source endpoint to the target endpoint.
A hadron’s valence content records its net quark-flavor quantum numbers, not the complete quark–gluon state.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-valence_quarkpdg-quark-modelwp-physics-quarknlab-physics-quark