NA48
E24267
NA48 was a CERN fixed-target experiment at the SPS focused on precision studies of CP violation and rare decays in neutral kaons.
All labels observed (3)
How this entity was disambiguated
This entity first appeared as the object of triple T192616 — 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: NA48 Context triple: [NA62, predecessorExperiment, NA48]
-
A.
NAM
NAM is the commonly used acronym for the National Academy of Medicine, a leading U.S. nonprofit institution that provides expert advice on health, medicine, and biomedical science.
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B.
NAFC
NAFC (North American Football Confederation) was the former governing body for association football in North America prior to its merger into CONCACAF.
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C.
Namba
Namba is a major commercial and entertainment district in Osaka, Japan, known for its bustling nightlife, shopping, and iconic neon-lit streets.
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D.
NA62
NA62 is a high-energy physics experiment at CERN designed primarily to study rare kaon decays and test the predictions of the Standard Model.
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E.
NAC
The North Atlantic Council (NAC) is NATO’s principal political decision-making body, bringing together member states’ representatives to oversee and guide the alliance’s policies and operations.
- 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: NA48 Target entity description: NA48 was a CERN fixed-target experiment at the SPS focused on precision studies of CP violation and rare decays in neutral kaons.
-
A.
NAM
NAM is the commonly used acronym for the National Academy of Medicine, a leading U.S. nonprofit institution that provides expert advice on health, medicine, and biomedical science.
-
B.
NAFC
NAFC (North American Football Confederation) was the former governing body for association football in North America prior to its merger into CONCACAF.
-
C.
Namba
Namba is a major commercial and entertainment district in Osaka, Japan, known for its bustling nightlife, shopping, and iconic neon-lit streets.
-
D.
NA62
NA62 is a high-energy physics experiment at CERN designed primarily to study rare kaon decays and test the predictions of the Standard Model.
-
E.
NAC
The North Atlantic Council (NAC) is NATO’s principal political decision-making body, bringing together member states’ representatives to oversee and guide the alliance’s policies and operations.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
CERN experiment
ⓘ
fixed-target experiment ⓘ particle physics experiment ⓘ |
| beamEnergy | SPS proton beam energies (hundreds of GeV) ⓘ |
| collaborationType | international collaboration ⓘ |
| country | Switzerland ⓘ |
| dataTakingMode | fixed-target mode ⓘ |
| decayModeStudied |
K0 -> 2 pi
ⓘ
K0 -> pi+ pi- ⓘ K0 -> pi0 pi0 ⓘ rare kaon decay modes ⓘ |
| detectorComponent |
beam spectrometer
ⓘ
drift chambers ⓘ scintillator hodoscopes ⓘ |
| detectorType |
hadronic calorimeter
ⓘ
liquid krypton electromagnetic calorimeter ⓘ magnetic spectrometer ⓘ muon detector ⓘ |
| endDate | 2000s ⓘ |
| field |
experimental high-energy physics
ⓘ
experimental particle physics ⓘ |
| hostLaboratory | CERN ⓘ |
| locatedAt |
CERN North Area
ⓘ
linked to:
North Area of CERN SPS
Super Proton Synchrotron ⓘ |
| measuredQuantity |
CP-violating asymmetries in kaon decays
ⓘ
direct CP violation parameter Re(epsilon'/epsilon) ⓘ |
| operatedBy | CERN ⓘ |
| physicsGoal |
measurement of direct CP violation in K0 decays
ⓘ
precision test of the Standard Model in the kaon sector ⓘ |
| primaryFocus | CP violation in neutral kaons ⓘ |
| publicationType | results published in peer-reviewed journals ⓘ |
| researchArea |
flavour physics
ⓘ
kaon physics ⓘ rare kaon decays ⓘ |
| startDate | 1990s ⓘ |
| studiesParticle |
K-long
ⓘ
K-short ⓘ K0 ⓘ neutral kaon ⓘ |
| successor |
NA48/1
ⓘ
linked to:
NA48
NA48/2 ⓘ
linked to:
NA48
|
| targetType | fixed target ⓘ |
| usesAccelerator | Super Proton Synchrotron ⓘ |
| usesBeam | proton beam from SPS ⓘ |
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: NA48 Description of subject: NA48 was a CERN fixed-target experiment at the SPS focused on precision studies of CP violation and rare decays in neutral kaons.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.