OPAL
E127243
OPAL was one of the major particle physics experiments at CERN’s Large Electron–Positron Collider, designed to study electron-positron collisions and probe the Standard Model.
All labels observed (1)
| Label | Occurrences |
|---|---|
| OPAL canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1096159 — 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: OPAL Context triple: [LEP, hostedExperiment, OPAL]
-
A.
OPA
OPA is a U.S. federal law enacted in 1990 that strengthens regulations and liability standards for preventing and responding to oil spills in navigable waters and shorelines.
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B.
O.P.
O.P. is a common abbreviation that can stand for various phrases such as “original poster,” “original post,” or “out of print,” depending on the context in which it is used.
-
C.
OPC
OPC is the acronym for the Office of Policy Coordination, a covert U.S. government organization that oversaw psychological and paramilitary operations during the early Cold War.
-
D.
OASAM
OASAM is a division of the U.S. Department of Labor responsible for providing administrative, management, and support services across the department.
-
E.
Opti
Opti is a friendly, futuristic robot character that served as one of the official mascots of Expo 2020 Dubai.
- 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: OPAL Target entity description: OPAL was one of the major particle physics experiments at CERN’s Large Electron–Positron Collider, designed to study electron-positron collisions and probe the Standard Model.
-
A.
OPA
OPA is a U.S. federal law enacted in 1990 that strengthens regulations and liability standards for preventing and responding to oil spills in navigable waters and shorelines.
-
B.
O.P.
O.P. is a common abbreviation that can stand for various phrases such as “original poster,” “original post,” or “out of print,” depending on the context in which it is used.
-
C.
OPC
OPC is the acronym for the Office of Policy Coordination, a covert U.S. government organization that oversaw psychological and paramilitary operations during the early Cold War.
-
D.
OASAM
OASAM is a division of the U.S. Department of Labor responsible for providing administrative, management, and support services across the department.
-
E.
Opti
Opti is a friendly, futuristic robot character that served as one of the official mascots of Expo 2020 Dubai.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
LEP experiment
ⓘ
detector ⓘ particle physics experiment ⓘ |
| acronymFor | Omni-Purpose Apparatus for LEP ⓘ |
| collaborationSize | hundreds of physicists ⓘ |
| collaborationType | international collaboration ⓘ |
| colliderType | electron–positron collider ⓘ |
| contributedTo |
electroweak precision measurements
ⓘ
precision tests of the Standard Model ⓘ quantum chromodynamics studies ⓘ |
| country |
France
ⓘ
Switzerland ⓘ |
| dataUsedFor |
determination of number of light neutrino species
ⓘ
precision measurements of W boson properties ⓘ precision measurements of Z boson properties ⓘ |
| detectorComponent |
central tracking detector
ⓘ
electromagnetic calorimeter ⓘ hadronic calorimeter ⓘ magnet system ⓘ muon chambers ⓘ |
| endOfDataTaking | 2000 ⓘ |
| fundedBy | multiple national funding agencies ⓘ |
| geometry | cylindrical detector ⓘ |
| hostInstitution | CERN ⓘ |
| locatedAt |
CERN
ⓘ
Large Electron–Positron Collider ⓘ |
| magneticFieldType | solenoidal magnetic field ⓘ |
| operatedDuring |
LEP
ⓘ
surface form:
LEP1
LEP ⓘ
surface form:
LEP2
|
| parallelExperiment |
ALEPH
ⓘ
Delphi ⓘ
surface form:
DELPHI
L3 ⓘ |
| partOf |
Large Electron–Positron Collider
ⓘ
surface form:
LEP experimental program
|
| primaryPurpose | study electron–positron collisions ⓘ |
| researchField |
high-energy physics
ⓘ
particle physics ⓘ |
| searchedFor |
Higgs boson
ⓘ
physics beyond the Standard Model ⓘ supersymmetric particles ⓘ |
| startOfDataTaking | 1989 ⓘ |
| studiedProcess |
W boson pair production
ⓘ
Z boson production ⓘ fermion pair production ⓘ hadronic final states ⓘ two-photon processes ⓘ |
| symmetry | azimuthally symmetric design ⓘ |
| testedTheory |
Standard Model
ⓘ
surface form:
Standard Model of particle physics
|
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: OPAL Description of subject: OPAL was one of the major particle physics experiments at CERN’s Large Electron–Positron Collider, designed to study electron-positron collisions and probe the Standard Model.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.