Belle detector at KEK B-factory
E565044
The Belle detector at the KEK B-factory is a high-energy physics experiment in Japan designed to study B-meson decays and CP violation in the quark sector using electron-positron collisions.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Belle detector | 1 |
| Belle detector at KEK B-factory canonical | 1 |
| Belle experiment | 1 |
| KEKB B-factory | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6033892 — 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: Belle detector at KEK B-factory Context triple: [BaBar detector, inspiredBy, Belle detector at KEK B-factory]
-
A.
Belle II detector
The Belle II detector is a large, sophisticated particle physics experiment at the SuperKEKB accelerator in Japan, designed to study rare processes in B-meson, charm, and tau decays to probe physics beyond the Standard Model.
-
B.
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.
-
C.
High Resolution Kaon Spectrometer
The High Resolution Kaon Spectrometer is a precision magnetic spectrometer designed to detect and analyze kaons produced in nuclear and particle physics experiments.
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D.
Collider Detector at Fermilab
The Collider Detector at Fermilab (CDF) was a major particle physics experiment at the Tevatron proton–antiproton collider that made key contributions to discoveries such as the top quark and precision measurements of the Standard Model.
-
E.
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.
- 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: Belle detector at KEK B-factory Target entity description: The Belle detector at the KEK B-factory is a high-energy physics experiment in Japan designed to study B-meson decays and CP violation in the quark sector using electron-positron collisions.
-
A.
Belle II detector
The Belle II detector is a large, sophisticated particle physics experiment at the SuperKEKB accelerator in Japan, designed to study rare processes in B-meson, charm, and tau decays to probe physics beyond the Standard Model.
-
B.
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.
-
C.
High Resolution Kaon Spectrometer
The High Resolution Kaon Spectrometer is a precision magnetic spectrometer designed to detect and analyze kaons produced in nuclear and particle physics experiments.
-
D.
Collider Detector at Fermilab
The Collider Detector at Fermilab (CDF) was a major particle physics experiment at the Tevatron proton–antiproton collider that made key contributions to discoveries such as the top quark and precision measurements of the Standard Model.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
high-energy physics experiment
ⓘ
particle physics detector ⓘ |
| associatedFacility | SuperKEKB (as successor facility context) NERFINISHED ⓘ |
| collaborationType | international collaboration ⓘ |
| collisionType | electron-positron collisions ⓘ |
| country | Japan ⓘ |
| dataTakingPeriod |
2010s
ⓘ
early 2000s ⓘ |
| designedToStudy |
B-meson decays
ⓘ
CP violation in the quark sector ⓘ |
| experimentType | asymmetric-energy B-factory experiment ⓘ |
| hasMagnet | superconducting solenoid ⓘ |
| hasSubsystem |
K-long and muon detector
ⓘ
aerogel Cherenkov counters ⓘ central drift chamber ⓘ electromagnetic calorimeter ⓘ silicon vertex detector ⓘ time-of-flight counters ⓘ |
| hostInstitution | High Energy Accelerator Research Organization KEK NERFINISHED ⓘ |
| locatedIn |
Ibaraki Prefecture
NERFINISHED
ⓘ
Japan ⓘ KEK NERFINISHED ⓘ KEK B-factory NERFINISHED ⓘ Tsukuba NERFINISHED ⓘ |
| magneticFieldStrength | approximately 1.5 tesla ⓘ |
| measuresParameter |
CKM matrix elements
ⓘ
CP asymmetries ⓘ angles of the unitarity triangle ⓘ branching fractions of B decays ⓘ |
| operatedAt | KEKB collider NERFINISHED ⓘ |
| optimizedFor |
flavor tagging of B mesons
ⓘ
reconstruction of B-meson decay vertices ⓘ |
| physicsProgram |
B physics
ⓘ
CP violation ⓘ flavor physics ⓘ |
| primaryGoal |
overconstrain the CKM unitarity triangle
ⓘ
test the Kobayashi-Maskawa mechanism of CP violation ⓘ |
| scientificContribution |
precision measurements of CP violation in B mesons
ⓘ
searches for physics beyond the Standard Model in B decays ⓘ tests of the Standard Model in the flavor sector ⓘ |
| studiesParticle |
B meson
ⓘ
charm meson ⓘ tau lepton ⓘ |
| studiesProcess |
CP-violating decays of B mesons
ⓘ
hadronic B decays ⓘ rare B decays ⓘ semileptonic B decays ⓘ time-dependent CP asymmetries ⓘ |
| successorExperiment | Belle II detector NERFINISHED ⓘ |
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: Belle detector at KEK B-factory Description of subject: The Belle detector at the KEK B-factory is a high-energy physics experiment in Japan designed to study B-meson decays and CP violation in the quark sector using electron-positron collisions.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Belle detector
this entity surface form:
KEKB B-factory
this entity surface form:
Belle experiment