Lambda baryon
E674922
The Lambda baryon is a neutral strange baryon composed of up, down, and strange quarks, notable for its role in studying weak interactions and hadron structure in particle physics.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lambda baryon canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7600536 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lambda baryon Context triple: [Omega minus baryon, heavierThan, Lambda baryon]
-
A.
Omega minus baryon
The Omega minus baryon is a negatively charged, strange baryon whose discovery in 1964 confirmed the quark model and the SU(3) flavor symmetry in particle physics.
-
B.
baryon decuplet
The baryon decuplet is a group of ten spin-3/2 baryons organized by flavor symmetry in the quark model, including particles such as the Δ, Σ*, Ξ*, and Ω⁻.
-
C.
tau lepton
The tau lepton is a heavy, unstable elementary particle similar to the electron but with much greater mass, playing a key role in lepton physics and tests of the Standard Model.
-
D.
Quark
Quark is a Ferengi bartender and shrewd businessman on the space station Deep Space Nine in the Star Trek universe.
-
E.
Quark
Quark is an Italian popular science television program created and hosted by Piero Angela that explains scientific and technological topics to a general audience.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Lambda baryon Target entity description: The Lambda baryon is a neutral strange baryon composed of up, down, and strange quarks, notable for its role in studying weak interactions and hadron structure in particle physics.
-
A.
Omega minus baryon
The Omega minus baryon is a negatively charged, strange baryon whose discovery in 1964 confirmed the quark model and the SU(3) flavor symmetry in particle physics.
-
B.
baryon decuplet
The baryon decuplet is a group of ten spin-3/2 baryons organized by flavor symmetry in the quark model, including particles such as the Δ, Σ*, Ξ*, and Ω⁻.
-
C.
tau lepton
The tau lepton is a heavy, unstable elementary particle similar to the electron but with much greater mass, playing a key role in lepton physics and tests of the Standard Model.
-
D.
Quark
Quark is a Ferengi bartender and shrewd businessman on the space station Deep Space Nine in the Star Trek universe.
-
E.
Quark
Quark is an Italian popular science television program created and hosted by Piero Angela that explains scientific and technological topics to a general audience.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
baryon
ⓘ
baryon resonance ⓘ fermion ⓘ |
| belongsTo | baryon octet ⓘ |
| containsQuark |
down quark
ⓘ
strange quark ⓘ up quark ⓘ |
| decaysTo |
pi- meson
ⓘ
proton ⓘ |
| decaysViaInteraction | weak interaction ⓘ |
| hasAntiparticle | anti-Lambda baryon ⓘ |
| hasBaryonNumber | 1 ⓘ |
| hasChargeConjugationParity | not defined (non-self-conjugate) ⓘ |
| hasDiscoveryEra | 1940s ⓘ |
| hasDownQuarkCount | 1 ⓘ |
| hasElectricCharge | 0 e ⓘ |
| hasFamily | strange baryons ⓘ |
| hasHypercharge | 0 ⓘ |
| hasIsospin | 0 ⓘ |
| hasMeanLifetime | ≈2.632×10^-10 s ⓘ |
| hasParity | +1 ⓘ |
| hasPDGID | 3122 ⓘ |
| hasQuarkContent | uds ⓘ |
| hasQuarkModel | three-quark state ⓘ |
| hasQuarkModelClassification | octet baryon ⓘ |
| hasRestMass | ≈1115.683 MeV/c^2 ⓘ |
| hasSpin | 1/2 ⓘ |
| hasStrangeness | -1 ⓘ |
| hasStrangeQuarkCount | 1 ⓘ |
| hasSymbol | Λ ⓘ |
| hasTotalAngularMomentumJ | 1/2 ⓘ |
| hasUpQuarkCount | 1 ⓘ |
| isColorSinglet | true ⓘ |
| isGroundStateOf | Lambda baryon family NERFINISHED ⓘ |
| isNeutral | true ⓘ |
| isStudiedIn |
hadron spectroscopy
ⓘ
particle physics ⓘ weak interaction physics ⓘ |
| isUsedToStudy |
CP violation (indirectly via hyperon decays)
ⓘ
SU(3) flavor symmetry ⓘ baryon structure ⓘ nonleptonic weak decays ⓘ |
| obeysStatistics | Fermi–Dirac statistics NERFINISHED ⓘ |
| participatesInInteraction |
electromagnetic interaction
ⓘ
strong interaction ⓘ weak interaction ⓘ |
| wasFirstObservedIn |
bubble chamber experiments
ⓘ
cosmic ray experiments ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Lambda baryon Description of subject: The Lambda baryon is a neutral strange baryon composed of up, down, and strange quarks, notable for its role in studying weak interactions and hadron structure in particle physics.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.