Sakata model
E601091
The Sakata model is an early composite model of hadrons that proposed protons, neutrons, and lambda particles as fundamental building blocks, anticipating key ideas later formalized in the quark model.
Statements (37)
| Predicate | Object |
|---|---|
| instanceOf |
composite model of hadrons
ⓘ
particle physics model ⓘ |
| anticipatedConcept |
hadron classification by internal quantum numbers
ⓘ
quark compositeness of hadrons ⓘ |
| classificationSchemeFor |
baryons
ⓘ
mesons ⓘ |
| coreAssumption | proton, neutron, and Lambda are elementary ⓘ |
| countryOfOrigin | Japan ⓘ |
| describes | hadrons ⓘ |
| era | pre-quark era ⓘ |
| field | particle physics ⓘ |
| fundamentalConstituentsCalled | baryons ⓘ |
| hasLimitation |
cannot accommodate all observed hadron resonances
ⓘ
treats composite baryons as elementary ⓘ |
| hasTheoreticalFramework | composite model of mesons and baryons ⓘ |
| historicalPrecursorOf |
eightfold way
NERFINISHED
ⓘ
quark model of Gell-Mann and Zweig ⓘ |
| historicalSignificance | early step toward quark-based understanding of hadrons ⓘ |
| inception | 1956 ⓘ |
| influenced | Japanese school of particle physics ⓘ |
| influencedDevelopmentOf | flavor symmetry ideas in particle physics ⓘ |
| inspired | quark model NERFINISHED ⓘ |
| inspiredBy | Yukawa meson theory NERFINISHED ⓘ |
| namedAfter | Shoichi Sakata NERFINISHED ⓘ |
| postulatesFundamentalConstituent |
Lambda baryon
NERFINISHED
ⓘ
neutron ⓘ proton ⓘ |
| predicts | relations among hadron quantum numbers ⓘ |
| proposedBy | Shoichi Sakata NERFINISHED ⓘ |
| reasonForSupersession |
deep inelastic scattering evidence for point-like partons
ⓘ
discovery of quarks ⓘ |
| relatedToConcept | flavor SU(3) symmetry ⓘ |
| status | superseded ⓘ |
| treatsBaryonsAs | combinations of fundamental baryons ⓘ |
| treatsMesonsAs | bound states of fundamental baryons and antibaryons ⓘ |
| usedToExplain |
hadron quantum numbers
ⓘ
patterns in hadron masses ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.