DIRAC
E134373
DIRAC is a high-energy physics experiment at CERN that investigates fundamental particles and their interactions using the Super Proton Synchrotron’s North Area beamlines.
All labels observed (2)
| Label | Occurrences |
|---|---|
| DIRAC canonical | 2 |
| DIRAC (Dimeson Relativistic Atom Complex) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1166330 — 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: DIRAC Context triple: [North Area of CERN SPS, servesExperiment, DIRAC]
-
A.
Dirac matrices
Dirac matrices are a set of matrices used in relativistic quantum mechanics to represent spin-½ particles and encode the algebra of the Dirac equation.
-
B.
Dirac spinors
Dirac spinors are four-component mathematical objects in relativistic quantum mechanics that describe spin-½ particles, such as electrons, incorporating both their spin and particle–antiparticle degrees of freedom.
-
C.
Weyl
Weyl is a surname most famously associated with Hermann Weyl, a prominent 20th-century mathematician and theoretical physicist known for major contributions to group theory, quantum mechanics, and the foundations of mathematics.
-
D.
Dirac equation
The Dirac equation is a fundamental relativistic wave equation in quantum mechanics that describes spin-½ particles such as electrons and predicts phenomena like antimatter.
-
E.
Dirac sea
The Dirac sea is a theoretical model in quantum physics proposing an infinite "sea" of negative-energy electron states to explain the existence of antimatter and the behavior of relativistic electrons.
- 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: DIRAC Target entity description: DIRAC is a high-energy physics experiment at CERN that investigates fundamental particles and their interactions using the Super Proton Synchrotron’s North Area beamlines.
-
A.
Dirac matrices
Dirac matrices are a set of matrices used in relativistic quantum mechanics to represent spin-½ particles and encode the algebra of the Dirac equation.
-
B.
Dirac spinors
Dirac spinors are four-component mathematical objects in relativistic quantum mechanics that describe spin-½ particles, such as electrons, incorporating both their spin and particle–antiparticle degrees of freedom.
-
C.
Weyl
Weyl is a surname most famously associated with Hermann Weyl, a prominent 20th-century mathematician and theoretical physicist known for major contributions to group theory, quantum mechanics, and the foundations of mathematics.
-
D.
Dirac equation
The Dirac equation is a fundamental relativistic wave equation in quantum mechanics that describes spin-½ particles such as electrons and predicts phenomena like antimatter.
-
E.
Dirac sea
The Dirac sea is a theoretical model in quantum physics proposing an infinite "sea" of negative-energy electron states to explain the existence of antimatter and the behavior of relativistic electrons.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
CERN experiment
ⓘ
high-energy physics experiment ⓘ |
| aimsTo |
investigate low-energy QCD phenomena
ⓘ
test theoretical predictions of particle physics ⓘ |
| city | Geneva ⓘ |
| country | Switzerland ⓘ |
| dataSource | proton beam from SPS ⓘ |
| environment | fixed-target experimental hall in SPS North Area ⓘ |
| field | particle physics ⓘ |
| focusesOn |
quantum chromodynamics tests
ⓘ
strong interaction ⓘ |
| fullName | DIRAC experiment ⓘ |
| hasType | fixed-target experiment ⓘ |
| hostInstitution | CERN ⓘ |
| infrastructure | detector system in SPS North Area ⓘ |
| involves | international collaboration ⓘ |
| locatedIn | CERN ⓘ |
| operatedBy | CERN experimental teams ⓘ |
| organizationType | collaborative research project ⓘ |
| researchArea | high-energy physics ⓘ |
| studies |
fundamental particles
ⓘ
particle interactions ⓘ |
| uses |
fixed-target configuration
ⓘ
secondary hadron beams ⓘ |
| usesAccelerator | Super Proton Synchrotron ⓘ |
| usesBeamline | SPS North Area beamlines ⓘ |
| usesTechnology |
calorimeters
ⓘ
particle detectors ⓘ particle identification systems ⓘ tracking detectors ⓘ |
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: DIRAC Description of subject: DIRAC is a high-energy physics experiment at CERN that investigates fundamental particles and their interactions using the Super Proton Synchrotron’s North Area beamlines.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: DIRAC