experiments at the Sudbury Neutrino Observatory
E537890
Experiments at the Sudbury Neutrino Observatory were groundbreaking studies of solar neutrinos that provided key evidence for neutrino oscillations and the existence of neutrino mass.
All labels observed (1)
| Label | Occurrences |
|---|---|
| experiments at the Sudbury Neutrino Observatory canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5660480 — 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: experiments at the Sudbury Neutrino Observatory Context triple: [Arthur McDonald, notableWork, experiments at the Sudbury Neutrino Observatory]
-
A.
Kamiokande experiment
The Kamiokande experiment was a pioneering Japanese neutrino observatory that provided key evidence for solar and atmospheric neutrinos, contributing to the discovery of neutrino oscillations.
-
B.
MINOS experiment
The MINOS experiment is a long-baseline neutrino oscillation project that studied how neutrinos change type as they travel from Fermilab to a distant underground detector.
-
C.
LBNE experiment
The LBNE (Long-Baseline Neutrino Experiment) was a proposed U.S.-based long-baseline neutrino physics project that laid the groundwork for what became the Deep Underground Neutrino Experiment (DUNE).
-
D.
NOvA experiment
The NOvA experiment is a long-baseline neutrino oscillation project that studies how neutrinos change type as they travel from Fermilab to a distant detector in northern Minnesota.
-
E.
Borexino
Borexino is a large liquid scintillator neutrino detector located at Italy’s Gran Sasso National Laboratory, designed to study low-energy solar and other neutrinos with extremely low background levels.
- 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: experiments at the Sudbury Neutrino Observatory Target entity description: Experiments at the Sudbury Neutrino Observatory were groundbreaking studies of solar neutrinos that provided key evidence for neutrino oscillations and the existence of neutrino mass.
-
A.
Kamiokande experiment
The Kamiokande experiment was a pioneering Japanese neutrino observatory that provided key evidence for solar and atmospheric neutrinos, contributing to the discovery of neutrino oscillations.
-
B.
MINOS experiment
The MINOS experiment is a long-baseline neutrino oscillation project that studied how neutrinos change type as they travel from Fermilab to a distant underground detector.
-
C.
LBNE experiment
The LBNE (Long-Baseline Neutrino Experiment) was a proposed U.S.-based long-baseline neutrino physics project that laid the groundwork for what became the Deep Underground Neutrino Experiment (DUNE).
-
D.
NOvA experiment
The NOvA experiment is a long-baseline neutrino oscillation project that studies how neutrinos change type as they travel from Fermilab to a distant detector in northern Minnesota.
-
E.
Borexino
Borexino is a large liquid scintillator neutrino detector located at Italy’s Gran Sasso National Laboratory, designed to study low-energy solar and other neutrinos with extremely low background levels.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
neutrino experiment series
ⓘ
particle physics experiment ⓘ solar neutrino experiment ⓘ |
| carriedOutAt | Sudbury Neutrino Observatory NERFINISHED ⓘ |
| collaboratingCountry |
Canada
NERFINISHED
ⓘ
United Kingdom NERFINISHED ⓘ United States NERFINISHED ⓘ |
| collaborationSize | about 100 scientists ⓘ |
| constrainedParameter |
mass-squared difference Δm²21
ⓘ
solar neutrino mixing angle θ12 ⓘ |
| dataTakingStart | 1999 ⓘ |
| dataUsedFor | global fits of neutrino oscillation parameters ⓘ |
| depthBelowSurface | about 2 kilometers underground ⓘ |
| depthInMetersWaterEquivalent | about 6000 meters water equivalent ⓘ |
| designFeature |
deep underground location to reduce cosmic-ray background
ⓘ
ultra-low background materials and shielding ⓘ |
| detectedNeutrinoFlavor |
electron neutrinos
ⓘ
muon neutrinos ⓘ tau neutrinos ⓘ |
| detectedNeutrinoSource | solar neutrinos from the Sun ⓘ |
| firstResultsPublished | early 2000s ⓘ |
| fundedBy |
Natural Sciences and Engineering Research Council of Canada
NERFINISHED
ⓘ
Particle Physics and Astronomy Research Council (UK) NERFINISHED ⓘ United States Department of Energy NERFINISHED ⓘ |
| impactOnAstrophysics | confirmed standard solar model predictions for total neutrino flux ⓘ |
| impactOnPhysics | established that the Standard Model must be extended to include neutrino mass ⓘ |
| keyResult |
demonstrated flavor transformation of solar neutrinos
ⓘ
measured electron neutrino flux lower than total active neutrino flux ⓘ measured total active solar neutrino flux consistent with solar model predictions ⓘ resolved the solar neutrino problem ⓘ |
| locatedIn | Creighton Mine, near Sudbury, Ontario, Canada NERFINISHED ⓘ |
| measuredInteractionType |
charged-current interactions on deuterons
ⓘ
elastic scattering on electrons ⓘ neutral-current interactions on deuterons ⓘ |
| operatedBy | SNO Collaboration NERFINISHED ⓘ |
| primaryGoal |
investigate neutrino oscillations
ⓘ
study solar neutrinos ⓘ test solar neutrino flux predictions ⓘ |
| providedEvidenceFor |
neutrino oscillations
ⓘ
non-zero neutrino mass ⓘ |
| recognizedBy | 2015 Nobel Prize in Physics to Arthur B. McDonald NERFINISHED ⓘ |
| relatedExperiment |
Homestake experiment
NERFINISHED
ⓘ
Super-Kamiokande NERFINISHED ⓘ |
| successorExperiment | SNO+ NERFINISHED ⓘ |
| supportedTheory |
Mikheyev–Smirnov–Wolfenstein (MSW) effect
NERFINISHED
ⓘ
three-flavor neutrino oscillation framework ⓘ |
| usedDetectorType | heavy water Cherenkov detector ⓘ |
| usedTargetMass | about 1000 tonnes of heavy water ⓘ |
| usedTargetMaterial | heavy water (D2O) ⓘ |
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: experiments at the Sudbury Neutrino Observatory Description of subject: Experiments at the Sudbury Neutrino Observatory were groundbreaking studies of solar neutrinos that provided key evidence for neutrino oscillations and the existence of neutrino mass.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.