Oscillation Project with Emulsion-tRacking Apparatus

E566109

neutrino experiment particle physics experiment

Oscillation Project with Emulsion-tRacking Apparatus (OPERA) was a particle physics experiment at the Gran Sasso Laboratory in Italy designed to study neutrino oscillations, particularly the appearance of tau neutrinos in a muon neutrino beam sent from CERN.

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All labels observed (1)

Label	Occurrences
Oscillation Project with Emulsion-tRacking Apparatus canonical	3

How this entity was disambiguated

This entity first appeared as the object of triple T6087961 — 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: Oscillation Project with Emulsion-tRacking Apparatus
Context triple: [OPERA, fullName, Oscillation Project with Emulsion-tRacking Apparatus]

A. Time Projection Chamber
The Time Projection Chamber is a large gaseous detector used in particle physics experiments to track and identify charged particles in three dimensions with high precision.
B. Apparatus for Meson and Baryon Experimental Research
Apparatus for Meson and Baryon Experimental Research is a high-energy physics experiment designed to study the properties and interactions of mesons and baryons using particle beams and advanced detectors.
C. Micromegas detectors
Micromegas detectors are high-granularity gaseous particle detectors that provide precise tracking and fast timing for high-energy physics experiments.
D. SPS Heavy Ion and Neutrino Experiment
The SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) is a fixed-target particle physics experiment at CERN’s Super Proton Synchrotron that studies hadron production in proton, pion, and ion collisions for strong-interaction physics and neutrino beam characterization.
E. DØ detector
The DØ detector is a large particle physics experiment at Fermilab’s Tevatron collider designed to study high-energy proton–antiproton collisions and probe fundamental particles and forces.
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: Oscillation Project with Emulsion-tRacking Apparatus
Target entity description: Oscillation Project with Emulsion-tRacking Apparatus (OPERA) was a particle physics experiment at the Gran Sasso Laboratory in Italy designed to study neutrino oscillations, particularly the appearance of tau neutrinos in a muon neutrino beam sent from CERN.

A. Time Projection Chamber
The Time Projection Chamber is a large gaseous detector used in particle physics experiments to track and identify charged particles in three dimensions with high precision.
B. Apparatus for Meson and Baryon Experimental Research
Apparatus for Meson and Baryon Experimental Research is a high-energy physics experiment designed to study the properties and interactions of mesons and baryons using particle beams and advanced detectors.
C. Micromegas detectors
Micromegas detectors are high-granularity gaseous particle detectors that provide precise tracking and fast timing for high-energy physics experiments.
D. SPS Heavy Ion and Neutrino Experiment
The SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) is a fixed-target particle physics experiment at CERN’s Super Proton Synchrotron that studies hadron production in proton, pion, and ion collisions for strong-interaction physics and neutrino beam characterization.
E. DØ detector
The DØ detector is a large particle physics experiment at Fermilab’s Tevatron collider designed to study high-energy proton–antiproton collisions and probe fundamental particles and forces.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	neutrino experiment ⓘ particle physics experiment ⓘ
abbreviation	OPERA ⓘ
baselineEndpoints	CERN to Gran Sasso ⓘ linked to: CERN accelerator complex
baselineLength	approximately 730 km ⓘ
collaborationSize	over 100 scientists ⓘ
collaborationType	international collaboration ⓘ
confirmedTauNeutrinoAppearanceReported	2015 ⓘ
country	Italy ⓘ
dataAnalysisFocus	identification of tau lepton decay topologies ⓘ
dataAnalysisMethod	emulsion tracking of charged particles ⓘ
detectorComponent	emulsion bricks ⓘ emulsion films ⓘ lead plates ⓘ
detectorTechnology	emulsion cloud chamber ⓘ nuclear emulsion ⓘ
endOfDataTaking	2012 ⓘ
field	particle physics ⓘ
firstTauNeutrinoCandidateReported	2010 ⓘ
fullName	Oscillation Project with Emulsion-tRacking Apparatus ⓘ
fundedBy	CERN ⓘ INFN ⓘ linked to: Istituto Nazionale di Fisica Nucleare various national funding agencies ⓘ
hostInstitution	INFN Gran Sasso National Laboratory ⓘ linked to: Gran Sasso National Laboratory
laboratoryType	underground laboratory ⓘ
locatedIn	Gran Sasso National Laboratory ⓘ LNGS ⓘ
locatedUnder	Gran Sasso massif ⓘ linked to: Gran Sasso d’Italia
measures	neutrino flavor change over long baseline ⓘ
neutrinoSource	CERN Neutrinos to Gran Sasso beam ⓘ linked to: CNGS (historical neutrino facility)
neutrinoSourceAbbreviation	CNGS ⓘ linked to: CNGS (historical neutrino facility)
primaryGoal	direct observation of tau neutrino appearance in a muon neutrino beam ⓘ
relatedExperiment	MINOS ⓘ Super-Kamiokande ⓘ linked to: Super-Kamiokande neutrino observatory T2K ⓘ
researchArea	neutrino oscillations ⓘ tau neutrino appearance ⓘ
scientificOutcome	observation of tau neutrino appearance in a muon neutrino beam ⓘ
startOfDataTaking	2008 ⓘ
status	completed experiment ⓘ
studies	muon neutrino to tau neutrino oscillations ⓘ νμ→ντ oscillations ⓘ
supports	three-flavor neutrino oscillation model ⓘ
tests	massive neutrino hypothesis ⓘ neutrino oscillation framework ⓘ
usesBeamFrom	CERN ⓘ