Neutrino
E400607
A neutrino is an extremely light, electrically neutral elementary particle that interacts only via the weak nuclear force and gravity, making it very difficult to detect.
All labels observed (2)
Statements (57)
| Predicate | Object |
|---|---|
| instanceOf |
Elementary particle
ⓘ
Fermion ⓘ Lepton ⓘ |
| antiparticleType | Right-handed (for antineutrinos) ⓘ |
| belongsToGeneration |
First generation (electron neutrino)
ⓘ
Second generation (muon neutrino) ⓘ Third generation (tau neutrino) ⓘ |
| conserves | Total lepton number (in Standard Model processes) ⓘ |
| detectionMethod |
Cherenkov radiation in large volumes of water or ice
ⓘ
Time Projection Chamber ⓘ
surface form:
Liquid argon time projection chambers
Scintillation detectors ⓘ |
| firstDetectionSource | Nuclear reactor ⓘ |
| firstDetectionYear | 1956 ⓘ |
| hasAntiparticle |
electron antineutrino
ⓘ
surface form:
Antineutrino
|
| hasChirality | Left-handed (active neutrinos) ⓘ |
| hasElectricCharge | 0 ⓘ |
| hasFlavor |
electron neutrino
ⓘ
surface form:
Electron neutrino
muon neutrino ⓘ
surface form:
Muon neutrino
Tau neutrino ⓘ |
| hasRestMass | Nonzero but very small ⓘ |
| hasRestMassUpperBound | Less than 1 eV/c^2 (per flavor) ⓘ |
| hasSpin | 1/2 ⓘ |
| interactsVia |
Gravity
ⓘ
Weak nuclear force ⓘ |
| isComponentOf |
Standard Model
ⓘ
surface form:
Standard Model of particle physics
|
| isProducedIn |
Beta decay
ⓘ
Big Bang relic background ⓘ Cosmic ray interactions in the atmosphere ⓘ Nuclear reactors ⓘ Other stars ⓘ Particle accelerators ⓘ Supernovae ⓘ The Sun ⓘ |
| isStudiedIn |
Atmospheric neutrino experiments
ⓘ
IceCube Neutrino Observatory ⓘ
surface form:
High-energy astrophysical neutrino observatories
Long-baseline accelerator experiments ⓘ Neutrino oscillation experiments ⓘ Reactor neutrino experiments ⓘ Solar neutrino experiments ⓘ |
| mayBe |
Dirac particle
ⓘ
Majorana fermion ⓘ
surface form:
Majorana particle
|
| nameMeaning | “Little neutral one” in Italian ⓘ |
| openQuestion |
Absolute neutrino mass scale
ⓘ
CP violation in the lepton sector ⓘ Dirac vs Majorana nature ⓘ Mass ordering (normal vs inverted hierarchy) ⓘ |
| penetrationProperty | Can pass through light-years of lead with low interaction probability ⓘ |
| proposalYear | 1930 ⓘ |
| rarelyInteractsVia | Other forces ⓘ |
| roleInAstrophysics | Carries away energy from supernovae core collapse ⓘ |
| roleInUniverse | Influences evolution of the early universe ⓘ |
| undergoes |
neutrino oscillation
ⓘ
surface form:
Neutrino oscillation
|
| violates | Lepton flavor conservation (individually) ⓘ |
| wasFirstDetectedBy |
Clyde Cowan
ⓘ
Clyde Cowan ⓘ
surface form:
Frederick Reines
|
| wasNamedBy | Enrico Fermi ⓘ |
| wasProposedBy | Wolfgang Pauli ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.