Large Electron–Positron Collider
E127652
The Large Electron–Positron Collider was a major circular particle accelerator at CERN that collided electrons and positrons to probe the electroweak interaction and test the Standard Model of particle physics.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Large Electron–Positron Collider canonical | 6 |
| LEP collider | 1 |
| LEP experimental program | 1 |
| LEP2 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1096105 — 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: Large Electron–Positron Collider Context triple: [Z boson, wasStudiedAt, Large Electron–Positron Collider]
-
A.
Stanford Linear Collider (SLC)
The Stanford Linear Collider (SLC) was a pioneering electron–positron linear collider at SLAC that enabled precision studies of the Z boson and electroweak interactions.
-
B.
Continuous Electron Beam Accelerator Facility
The Continuous Electron Beam Accelerator Facility is a high-energy physics research installation that provides continuous beams of electrons for probing the structure of nuclear matter.
-
C.
Proton Synchrotron
The Proton Synchrotron is a historic circular particle accelerator at CERN that has played a key role in high-energy physics research and in feeding beams to larger colliders.
-
D.
Large Hadron Collider
The Large Hadron Collider is the world’s largest and most powerful particle accelerator, used to smash subatomic particles together at unprecedented energies to study fundamental physics, including the Higgs boson.
-
E.
Super Proton Synchrotron
The Super Proton Synchrotron is a high-energy circular particle accelerator at CERN that serves both as a research machine and as a key injector for the Large Hadron Collider.
- 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: Large Electron–Positron Collider Target entity description: The Large Electron–Positron Collider was a major circular particle accelerator at CERN that collided electrons and positrons to probe the electroweak interaction and test the Standard Model of particle physics.
-
A.
Stanford Linear Collider (SLC)
The Stanford Linear Collider (SLC) was a pioneering electron–positron linear collider at SLAC that enabled precision studies of the Z boson and electroweak interactions.
-
B.
Continuous Electron Beam Accelerator Facility
The Continuous Electron Beam Accelerator Facility is a high-energy physics research installation that provides continuous beams of electrons for probing the structure of nuclear matter.
-
C.
Proton Synchrotron
The Proton Synchrotron is a historic circular particle accelerator at CERN that has played a key role in high-energy physics research and in feeding beams to larger colliders.
-
D.
Large Hadron Collider
The Large Hadron Collider is the world’s largest and most powerful particle accelerator, used to smash subatomic particles together at unprecedented energies to study fundamental physics, including the Higgs boson.
-
E.
Super Proton Synchrotron
The Super Proton Synchrotron is a high-energy circular particle accelerator at CERN that serves both as a research machine and as a key injector for the Large Hadron Collider.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
CERN facility
ⓘ
circular accelerator ⓘ collider ⓘ electron–positron collider ⓘ particle accelerator ⓘ |
| beamType |
electron
ⓘ
positron ⓘ |
| collisionType | electron–positron ⓘ |
| commissioned | 1989 ⓘ |
| constructionStart | 1983 ⓘ |
| country |
France
ⓘ
Switzerland ⓘ |
| decommissioned | 2000 ⓘ |
| energyRegime |
LEP1
ⓘ
linked to:
LEP
LEP2 ⓘ
linked to:
Large Electron–Positron Collider
|
| firstBeam | 1989 ⓘ |
| hostedExperiment |
ALEPH
ⓘ
DELPHI ⓘ L3 ⓘ OPAL ⓘ |
| inaugurated | 13 November 1989 ⓘ |
| LEP1EnergyRange | around Z boson resonance ⓘ |
| LEP2EnergyRange | up to about 209 GeV centre-of-mass energy ⓘ |
| locatedAt | CERN ⓘ |
| locatedIn | Meyrin ⓘ |
| locatedNear | Geneva ⓘ |
| maximumCentreOfMassEnergy | about 209 GeV ⓘ |
| neutrinoFamiliesMeasured | 3 ⓘ |
| notableResult |
high-precision determination of number of light neutrino families
ⓘ
precision measurements of W boson mass ⓘ precision measurements of Z boson mass and width ⓘ |
| operatedBy | CERN ⓘ |
| operationEnd | 2000 ⓘ |
| operationStart | 1989 ⓘ |
| physicsProgram |
precision measurements of W boson
ⓘ
precision measurements of Z boson ⓘ search for Higgs boson ⓘ searches for new particles beyond Standard Model ⓘ tests of electroweak theory ⓘ |
| predecessor | Super Proton Synchrotron ⓘ |
| primaryPurpose |
probe electroweak interaction
ⓘ
test Standard Model of particle physics ⓘ |
| ringType | underground tunnel ⓘ |
| status | dismantled ⓘ |
| successor | Large Hadron Collider ⓘ |
| tunnelCircumference |
26.7 kilometres
ⓘ
27 kilometres ⓘ |
| tunnelDepth | about 100 metres underground ⓘ |
| tunnelReuse | used for Large Hadron Collider ⓘ |
| tunnelSharedWith | Large Hadron Collider ⓘ |
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: Large Electron–Positron Collider Description of subject: The Large Electron–Positron Collider was a major circular particle accelerator at CERN that collided electrons and positrons to probe the electroweak interaction and test the Standard Model of particle physics.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Z
linked to: Large Electron–Positron Collider
linked to: Large Electron–Positron Collider