Sakata model of hadrons
E601092
The Sakata model of hadrons is an early composite model in particle physics that treated hadrons as bound states of a few fundamental baryons, serving as a precursor to the quark model.
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf | particle physics model ⓘ |
| aimsToExplain |
baryon multiplets
ⓘ
hadron spectrum ⓘ meson multiplets ⓘ |
| approximateProposalYear | 1956 ⓘ |
| assumes |
compositeness of mesons
ⓘ
compositeness of non-fundamental baryons ⓘ |
| category |
subatomic physics
ⓘ
theoretical physics ⓘ |
| classificationSchemeFor | hadrons ⓘ |
| countryOfOrigin | Japan ⓘ |
| describes | hadrons as composite systems ⓘ |
| field | particle physics ⓘ |
| fundamentalBaryonSet | p, n, Λ ⓘ |
| hasConceptualSuccessor | constituent quark model NERFINISHED ⓘ |
| historicalContext | pre-QCD era ⓘ |
| historicalInfluenceOn | Japanese school of particle physics ⓘ |
| historicalRole | step toward understanding internal structure of hadrons ⓘ |
| influenced |
development of flavor SU(3)
ⓘ
early SU(3) classification of hadrons ⓘ |
| inspired |
eightfold way
NERFINISHED
ⓘ
quark model ⓘ |
| involves |
baryon number conservation
ⓘ
baryon–antibaryon bound states ⓘ strangeness quantum number ⓘ symmetry multiplets of hadrons ⓘ |
| limitation |
cannot naturally accommodate all observed hadron states
ⓘ
lacks underlying quark degrees of freedom ⓘ |
| motivated | search for more fundamental constituents of hadrons ⓘ |
| namedAfter | Shoichi Sakata NERFINISHED ⓘ |
| precursorOf | quark model NERFINISHED ⓘ |
| proposedBy | Shoichi Sakata NERFINISHED ⓘ |
| publicationDecade | 1950s ⓘ |
| relatedTo | Gell-Mann–Nishijima scheme NERFINISHED ⓘ |
| replacedBy | quark model NERFINISHED ⓘ |
| status | historical ⓘ |
| treatsAsFundamental |
Lambda baryon
NERFINISHED
ⓘ
neutron ⓘ proton ⓘ |
| treatsBaryonsAs | composite states of fundamental baryons ⓘ |
| treatsMesonsAs | bound states of fundamental baryons and antibaryons ⓘ |
| usedToInterpret | early strange particle data ⓘ |
| usesConcept |
SU(3) flavor symmetry precursor
ⓘ
isospin symmetry ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.