K+ (charged kaon)
E24268
K⁺ (charged kaon) is a positively charged meson containing an up quark and an anti-strange quark, notable for its role in probing weak interactions and testing the Standard Model through rare decay processes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| K+ (charged kaon) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T192637 — 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: K+ (charged kaon) Context triple: [NA62, studiesParticle, K+ (charged kaon)]
-
A.
W boson
The W boson is a massive elementary particle that mediates the weak nuclear force and is responsible for processes like beta decay in the Standard Model of particle physics.
-
B.
Z boson
The Z boson is a neutral elementary particle that mediates the weak nuclear force and plays a central role in the electroweak theory of particle physics.
-
C.
KC
KC is a common shorthand nickname for Kansas City, Missouri, a major Midwestern U.S. city known for its jazz heritage, barbecue, and sports teams.
-
D.
LHCf
LHCf is a CERN experiment at the Large Hadron Collider that studies forward particles produced in proton–proton collisions to improve our understanding of ultra-high-energy cosmic rays.
-
E.
Kt
Kt is the post-nominal abbreviation used to denote a Knight Bachelor in the British honours system.
- 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: K+ (charged kaon) Target entity description: K⁺ (charged kaon) is a positively charged meson containing an up quark and an anti-strange quark, notable for its role in probing weak interactions and testing the Standard Model through rare decay processes.
-
A.
W boson
The W boson is a massive elementary particle that mediates the weak nuclear force and is responsible for processes like beta decay in the Standard Model of particle physics.
-
B.
Z boson
The Z boson is a neutral elementary particle that mediates the weak nuclear force and plays a central role in the electroweak theory of particle physics.
-
C.
KC
KC is a common shorthand nickname for Kansas City, Missouri, a major Midwestern U.S. city known for its jazz heritage, barbecue, and sports teams.
-
D.
LHCf
LHCf is a CERN experiment at the Large Hadron Collider that studies forward particles produced in proton–proton collisions to improve our understanding of ultra-high-energy cosmic rays.
-
E.
Kt
Kt is the post-nominal abbreviation used to denote a Knight Bachelor in the British honours system.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
charged kaon
ⓘ
meson ⓘ pseudoscalar meson ⓘ |
| belongsTo | strange mesons ⓘ |
| hasAntiquark | s̄ ⓘ |
| hasBaryonNumber | 0 ⓘ |
| hasChargeConjugateState | K⁻ ⓘ |
| hasCParity | not defined ⓘ |
| hasDecayMode |
μ⁺ ν_μ
ⓘ
π⁰ e⁺ ν_e ⓘ π⁰ μ⁺ ν_μ ⓘ π⁺ π⁰ ⓘ π⁺ π⁺ π⁻ ⓘ |
| hasDominantDecayBranchingRatio | ≈63.5% ⓘ |
| hasDominantDecayMode | μ⁺ ν_μ ⓘ |
| hasElectricCharge | +1 e ⓘ |
| hasGParity | not defined ⓘ |
| hasIsospin | 1/2 ⓘ |
| hasIsospinThirdComponent | +1/2 ⓘ |
| hasLeptonNumber | 0 ⓘ |
| hasLifetimeCategory | long-lived meson ⓘ |
| hasMass | ≈493.677 MeV/c² ⓘ |
| hasMeanLifetime | ≈1.238×10⁻⁸ s ⓘ |
| hasParity | -1 ⓘ |
| hasQuantumNumber |
I=1/2
ⓘ
J^P=0⁻ ⓘ S=+1 ⓘ |
| hasQuark | u ⓘ |
| hasQuarkContent |
anti-strange quark
ⓘ
up quark ⓘ |
| hasRestEnergy | ≈493.677 MeV ⓘ |
| hasSecondLargestDecayBranchingRatio | π⁺ π⁰ ⓘ |
| hasSpin | 0 ⓘ |
| hasStrangeness | +1 ⓘ |
| hasSymbol | K⁺ ⓘ |
| hasValenceQuarks | u s̄ ⓘ |
| interactsVia |
electromagnetic interaction
ⓘ
strong interaction ⓘ weak interaction ⓘ |
| isAntiparticleOf | K⁻ ⓘ |
| isDescribedBy |
Standard Model
ⓘ
surface form:
Standard Model of particle physics
|
| isPartOf | kaon family ⓘ |
| isProducedIn |
cosmic-ray interactions
ⓘ
high-energy hadron collisions ⓘ |
| isSubjectOf | CP-violation studies in kaon sector ⓘ |
| isUsedIn |
flavor physics experiments
ⓘ
rare decay searches ⓘ |
| isUsedToProbe | weak interactions ⓘ |
| isUsedToTest | Standard Model ⓘ |
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: K+ (charged kaon) Description of subject: K⁺ (charged kaon) is a positively charged meson containing an up quark and an anti-strange quark, notable for its role in probing weak interactions and testing the Standard Model through rare decay processes.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.