BASE experiment
E41834
The BASE experiment is a high-precision physics experiment at CERN that measures the properties of protons and antiprotons to test fundamental symmetries such as CPT invariance.
All labels observed (1)
| Label | Occurrences |
|---|---|
| BASE experiment canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T327807 — 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: BASE experiment Context triple: [Antiproton Decelerator, providesBeamTo, BASE experiment]
-
A.
UA1 experiment
The UA1 experiment was a high-energy physics collaboration at CERN’s Super Proton Synchrotron that became famous for providing the first experimental evidence of the W and Z bosons, key carriers of the weak nuclear force.
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B.
UA2 experiment
The UA2 experiment was a high-energy physics collaboration at CERN’s Super Proton Synchrotron that played a key role in confirming the existence and properties of the W boson.
-
C.
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.
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D.
Kennedy–Thorndike experiment
The Kennedy–Thorndike experiment is a classic test of special relativity that examined the constancy of the speed of light using an interferometer with unequal arm lengths and varying laboratory velocity.
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E.
Cavendish experiment
The Cavendish experiment was an 18th-century physics experiment by Henry Cavendish that measured the tiny gravitational attraction between lead spheres, allowing the first calculation of the gravitational constant and the mass of the Earth.
- 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: BASE experiment Target entity description: The BASE experiment is a high-precision physics experiment at CERN that measures the properties of protons and antiprotons to test fundamental symmetries such as CPT invariance.
-
A.
UA1 experiment
The UA1 experiment was a high-energy physics collaboration at CERN’s Super Proton Synchrotron that became famous for providing the first experimental evidence of the W and Z bosons, key carriers of the weak nuclear force.
-
B.
UA2 experiment
The UA2 experiment was a high-energy physics collaboration at CERN’s Super Proton Synchrotron that played a key role in confirming the existence and properties of the W boson.
-
C.
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.
-
D.
Kennedy–Thorndike experiment
The Kennedy–Thorndike experiment is a classic test of special relativity that examined the constancy of the speed of light using an interferometer with unequal arm lengths and varying laboratory velocity.
-
E.
Cavendish experiment
The Cavendish experiment was an 18th-century physics experiment by Henry Cavendish that measured the tiny gravitational attraction between lead spheres, allowing the first calculation of the gravitational constant and the mass of the Earth.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
CERN experiment
ⓘ
antimatter experiment ⓘ high-precision measurement experiment ⓘ physics experiment ⓘ |
| acronym | BASE ⓘ |
| aimsTo |
compare properties of protons and antiprotons with high precision
ⓘ
improve limits on CPT violation in the baryon sector ⓘ search for differences between matter and antimatter ⓘ |
| collaborationType | international collaboration ⓘ |
| compares |
charge-to-mass ratios of proton and antiproton
ⓘ
magnetic moments of proton and antiproton ⓘ |
| country | Switzerland ⓘ |
| dataType | high-precision frequency measurements ⓘ |
| environment |
cryogenic temperatures
ⓘ
ultra-high vacuum ⓘ |
| fullName | Baryon Antibaryon Symmetry Experiment ⓘ |
| hasApplication |
constraints on physics beyond the Standard Model
ⓘ
tests of fundamental physics ⓘ |
| hostOrganization | CERN ⓘ |
| locatedAt |
Antiproton Decelerator
ⓘ
surface form:
Antiproton Decelerator at CERN
|
| location | CERN ⓘ |
| measurementTechnique |
Penning trap
ⓘ
cryogenic Penning trap ⓘ single-particle spectroscopy ⓘ |
| measuresProperty |
charge-to-mass ratio of the antiproton
ⓘ
charge-to-mass ratio of the proton ⓘ g-factor of the antiproton ⓘ g-factor of the proton ⓘ magnetic moment of the antiproton ⓘ magnetic moment of the proton ⓘ |
| primaryObjective | test CPT invariance ⓘ |
| relatedToConcept |
baryon-antibaryon symmetry
ⓘ
matter–antimatter asymmetry ⓘ |
| relatedToTheory |
CPT theorem
ⓘ
Standard Model ⓘ
surface form:
Standard Model of particle physics
|
| researchField |
antimatter physics
ⓘ
fundamental symmetries ⓘ particle physics ⓘ precision measurements ⓘ |
| studiesParticle |
antiproton
ⓘ
proton ⓘ |
| testsSymmetry |
CPT symmetry
ⓘ
charge-parity-time reversal symmetry ⓘ |
| uses |
radiofrequency techniques
ⓘ
superconducting magnets ⓘ |
| usesFacility |
Antiproton Decelerator
ⓘ
surface form:
CERN Antiproton Decelerator
|
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: BASE experiment Description of subject: The BASE experiment is a high-precision physics experiment at CERN that measures the properties of protons and antiprotons to test fundamental symmetries such as CPT invariance.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.