tau neutrino
E51187
The tau neutrino is a fundamental, electrically neutral lepton associated with the tau particle, interacting only via the weak force and gravity and playing a key role in neutrino oscillations.
All labels observed (1)
| Label | Occurrences |
|---|---|
| tau neutrino canonical | 6 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
elementary particle
ⓘ
fermion ⓘ lepton ⓘ neutrino ⓘ |
| antiparticle | tau antineutrino ⓘ |
| antiparticleHelicityInWeakInteractions | predominantly right-handed ⓘ |
| baryonNumber | 0 ⓘ |
| belongsToGeneration | third lepton generation ⓘ |
| cosmologicalAbundance | relic background expected but undetected ⓘ |
| detectionMethod | charged-current interactions producing tau leptons ⓘ |
| discoveredBy | DONUT experiment ⓘ |
| discoveryLocation |
Fermi National Accelerator Laboratory
ⓘ
surface form:
Fermilab
|
| discoveryYear | 2000 ⓘ |
| doesNotInteractVia |
electromagnetic interaction
ⓘ
strong interaction ⓘ |
| electricCharge | 0 ⓘ |
| flavorEigenstateOf | weak interaction ⓘ |
| hasRestMass | nonzero but very small ⓘ |
| hasSpin | 1/2 ⓘ |
| helicityInWeakInteractions | predominantly left-handed ⓘ |
| interactionCrossSection | extremely small ⓘ |
| interactsVia |
gravity
ⓘ
weak interaction ⓘ |
| isChiralInStandardModel | left-handed only ⓘ |
| isColorless | true ⓘ |
| isDescribedBy |
Standard Model
ⓘ
surface form:
Standard Model of particle physics
|
| isFundamental | true ⓘ |
| isInvisibleInDetectors | directly undetectable; inferred from missing energy ⓘ |
| isNeutralLepton | true ⓘ |
| isPartnerOf | tau lepton ⓘ |
| isPointLikeAtCurrentScales | true ⓘ |
| isSubjectOf |
PMNS matrix measurements
ⓘ
neutrino mass hierarchy studies ⓘ |
| isWeaklyInteracting | true ⓘ |
| leptonFamilyNumber | tau lepton number ⓘ |
| leptonNumber | +1 ⓘ |
| massUpperLimit | a few eV/c^2 (order of magnitude) ⓘ |
| mixesWith |
electron neutrino
ⓘ
muon neutrino ⓘ |
| participatesIn | neutrino oscillations ⓘ |
| productionMechanism |
astrophysical processes
ⓘ
high-energy hadron collisions ⓘ tau lepton decay ⓘ |
| rightHandedComponent | not included in minimal Standard Model ⓘ |
| roleInAstrophysics | participates in supernova neutrino fluxes ⓘ |
| roleInCosmology | contributes to radiation density in early universe ⓘ |
| statistics | Fermi–Dirac statistics ⓘ |
| symbol | ν_τ ⓘ |
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.