DONUT experiment
E256187
The DONUT experiment was a Fermilab particle physics experiment that achieved the first direct observation of the tau neutrino, confirming the existence of the third neutrino flavor.
All labels observed (1)
| Label | Occurrences |
|---|---|
| DONUT experiment canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2321406 — 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: DONUT experiment Context triple: [tau neutrino, discoveredBy, DONUT experiment]
-
A.
DUNE experiment
The DUNE experiment is a major international neutrino physics project designed to study neutrino oscillations, matter–antimatter asymmetry, and proton decay using intense neutrino beams and massive underground detectors.
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B.
CMS experiment
The CMS experiment is a major general-purpose particle physics detector at CERN’s Large Hadron Collider designed to investigate a wide range of phenomena including the Higgs boson, dark matter candidates, and physics beyond the Standard Model.
-
C.
DØ detector
The DØ detector is a large particle physics experiment at Fermilab’s Tevatron collider designed to study high-energy proton–antiproton collisions and probe fundamental particles and forces.
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D.
ATRAP experiment
The ATRAP experiment is a particle physics project at CERN dedicated to trapping and studying antihydrogen atoms and other antimatter systems to test fundamental symmetries and the properties of antimatter.
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E.
BaBar detector
The BaBar detector was a large particle physics experiment at the SLAC National Accelerator Laboratory designed to study B-meson decays and CP violation in high-energy electron–positron collisions.
- 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: DONUT experiment Target entity description: The DONUT experiment was a Fermilab particle physics experiment that achieved the first direct observation of the tau neutrino, confirming the existence of the third neutrino flavor.
-
A.
DUNE experiment
The DUNE experiment is a major international neutrino physics project designed to study neutrino oscillations, matter–antimatter asymmetry, and proton decay using intense neutrino beams and massive underground detectors.
-
B.
CMS experiment
The CMS experiment is a major general-purpose particle physics detector at CERN’s Large Hadron Collider designed to investigate a wide range of phenomena including the Higgs boson, dark matter candidates, and physics beyond the Standard Model.
-
C.
DØ detector
The DØ detector is a large particle physics experiment at Fermilab’s Tevatron collider designed to study high-energy proton–antiproton collisions and probe fundamental particles and forces.
-
D.
ATRAP experiment
The ATRAP experiment is a particle physics project at CERN dedicated to trapping and studying antihydrogen atoms and other antimatter systems to test fundamental symmetries and the properties of antimatter.
-
E.
BaBar detector
The BaBar detector was a large particle physics experiment at the SLAC National Accelerator Laboratory designed to study B-meson decays and CP violation in high-energy electron–positron collisions.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
Fermilab experiment
ⓘ
neutrino experiment ⓘ particle physics experiment ⓘ |
| collaborationType | international collaboration ⓘ |
| confirmedExistenceOf |
tau neutrino
ⓘ
third neutrino flavor ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dataType | neutrino interaction events in emulsion ⓘ |
| evidenceCategory | laboratory-based neutrino detection ⓘ |
| evidenceFor | tau lepton production by tau neutrinos ⓘ |
| evidenceType | direct observation ⓘ |
| fieldContribution |
experimental confirmation of tau neutrino
ⓘ
verification of third-generation lepton neutrino ⓘ |
| hasAcronymExpansion | Direct Observation of the NU Tau ⓘ |
| hasAlternativeName |
DONUT
ⓘ
E872 ⓘ |
| hostLaboratory | Fermi National Accelerator Laboratory ⓘ |
| isPartOf | Fermilab fixed-target program ⓘ |
| locatedInFacility |
Fermi National Accelerator Laboratory
ⓘ
surface form:
Fermilab
|
| measuredQuantity | tau neutrino interaction rate ⓘ |
| neutrinoFlavorCountConfirmed | three ⓘ |
| notableAchievement | first direct detection of tau neutrino interactions ⓘ |
| observedDecayProduct | tau lepton ⓘ |
| observedInteraction | charged-current tau neutrino interaction ⓘ |
| primaryGoal | direct observation of the tau neutrino ⓘ |
| publicationType | peer-reviewed physics articles ⓘ |
| researchField |
neutrino physics
ⓘ
particle physics ⓘ |
| resultSignificance | first direct observation of tau neutrino ⓘ |
| status | completed ⓘ |
| studiedParticle |
neutrino
ⓘ
tau neutrino ⓘ |
| supportedTheory |
Standard Model
ⓘ
surface form:
Standard Model of particle physics
three-flavor neutrino model ⓘ |
| testedConcept | existence of the third neutrino flavor ⓘ |
| usedAccelerator | Tevatron ⓘ |
| usedBeamType | high-energy neutrino beam ⓘ |
| usedDetectionMethod |
emulsion cloud chamber technique
ⓘ
nuclear emulsion detection ⓘ |
| usedInteractionType | neutrino–nucleon interactions ⓘ |
| usedTargetMaterial | emulsion target ⓘ |
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: DONUT experiment Description of subject: The DONUT experiment was a Fermilab particle physics experiment that achieved the first direct observation of the tau neutrino, confirming the existence of the third neutrino flavor.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.