Muon g-2 experiment
E76604
The Muon g-2 experiment is a high-precision particle physics experiment that measures the anomalous magnetic moment of the muon to test the limits of the Standard Model and search for signs of new physics.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Fermilab Muon g-2 experiment | 2 |
| Muon g-2 experiment canonical | 2 |
| Muon Campus at Fermilab | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T613887 — 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: Muon g-2 experiment Context triple: [Fermi National Accelerator Laboratory, hasFacility, Muon g-2 experiment]
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A.
Common Muon and Proton Apparatus for Structure and Spectroscopy
The Common Muon and Proton Apparatus for Structure and Spectroscopy (COMPASS) is a fixed-target experiment at CERN designed to investigate the internal structure and dynamics of hadrons using high-intensity muon and hadron beams.
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B.
ASACUSA experiment
The ASACUSA experiment is a CERN-based research project that studies the properties of antiprotons and antihydrogen to test fundamental symmetries in physics.
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C.
Muon Spectrometer
The Muon Spectrometer is a specialized ALICE detector subsystem designed to identify and measure muons produced in high-energy heavy-ion collisions at the Large Hadron Collider.
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D.
GBAR experiment
The GBAR experiment is a physics research project at CERN designed to study the behavior of antihydrogen in Earth's gravitational field to test the equivalence principle with antimatter.
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E.
Ives–Stilwell experiment
The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
- 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: Muon g-2 experiment Target entity description: The Muon g-2 experiment is a high-precision particle physics experiment that measures the anomalous magnetic moment of the muon to test the limits of the Standard Model and search for signs of new physics.
-
A.
Common Muon and Proton Apparatus for Structure and Spectroscopy
The Common Muon and Proton Apparatus for Structure and Spectroscopy (COMPASS) is a fixed-target experiment at CERN designed to investigate the internal structure and dynamics of hadrons using high-intensity muon and hadron beams.
-
B.
ASACUSA experiment
The ASACUSA experiment is a CERN-based research project that studies the properties of antiprotons and antihydrogen to test fundamental symmetries in physics.
-
C.
Muon Spectrometer
The Muon Spectrometer is a specialized ALICE detector subsystem designed to identify and measure muons produced in high-energy heavy-ion collisions at the Large Hadron Collider.
-
D.
GBAR experiment
The GBAR experiment is a physics research project at CERN designed to study the behavior of antihydrogen in Earth's gravitational field to test the equivalence principle with antimatter.
-
E.
Ives–Stilwell experiment
The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
high-precision measurement
ⓘ
muon magnetic moment experiment ⓘ particle physics experiment ⓘ |
| aimsFor | sub-part-per-million precision ⓘ |
| collaboration | international collaboration ⓘ |
| collaborationSize | hundreds of scientists ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dataType |
muon decay positron spectra
ⓘ
time distribution of decay products ⓘ |
| fundingSource |
U.S. Department of Energy
ⓘ
surface form:
United States Department of Energy
|
| hasComponent |
14-meter-diameter storage ring
ⓘ
electromagnetic calorimeters ⓘ muon injection system ⓘ straw tracking detectors ⓘ superconducting storage ring magnet ⓘ |
| hasGoal |
measure anomalous magnetic moment of the muon
ⓘ
search for physics beyond the Standard Model ⓘ test predictions of the Standard Model ⓘ |
| hostLaboratory |
Fermi National Accelerator Laboratory
ⓘ
surface form:
Fermilab
|
| locatedIn |
Fermi National Accelerator Laboratory
ⓘ
Fermi National Accelerator Laboratory ⓘ
surface form:
Fermilab
|
| measures |
anomalous magnetic moment of the muon
ⓘ
magnetic field in storage ring ⓘ muon g-factor ⓘ precession frequency of muon spin ⓘ |
| precededBy | Brookhaven E821 experiment ⓘ |
| primaryObservable | muon anomalous magnetic moment a_μ ⓘ |
| relatedTo |
lepton universality tests
ⓘ
muon electric dipole moment searches ⓘ |
| researchField |
experimental high-energy physics
ⓘ
particle physics ⓘ precision tests of the Standard Model ⓘ |
| searchesFor |
deviations from Standard Model predictions
ⓘ
effects of undiscovered particles ⓘ new physics ⓘ |
| studies | muon ⓘ |
| symbol | g-2 ⓘ |
| testsTheory |
Standard Model
ⓘ
surface form:
Standard Model of particle physics
electroweak theory ⓘ hadronic contributions to g-2 ⓘ quantum electrodynamics ⓘ |
| uses |
calorimeters
ⓘ
high-intensity muon beam ⓘ muon storage ring ⓘ precision magnetic field measurement ⓘ superconducting magnet ⓘ tracking detectors ⓘ |
| usesConcept |
precision frequency measurement
ⓘ
relativistic muon storage ⓘ spin precession in magnetic field ⓘ |
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: Muon g-2 experiment Description of subject: The Muon g-2 experiment is a high-precision particle physics experiment that measures the anomalous magnetic moment of the muon to test the limits of the Standard Model and search for signs of new physics.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Muon Campus at Fermilab
this entity surface form:
Fermilab Muon g-2 experiment
this entity surface form:
Fermilab Muon g-2 experiment