W boson
E1916
The W boson is a massive elementary particle that mediates the weak nuclear force and is responsible for processes like beta decay in the Standard Model of particle physics.
Aliases (3)
- W+ boson ×3
- W- boson ×2
- W boson mass ×1
Statements (70)
| Predicate | Object |
|---|---|
| instanceOf |
elementary particle
→
gauge boson → vector boson → weak interaction mediator → |
| constrains |
Standard Model parameters
→
|
| couplesTo |
Higgs boson
→
W boson → Z boson → left-handed fermions → leptons → photon → quarks → |
| decaysTo |
lepton + neutrino
→
quark + antiquark → |
| doesNotParticipateIn |
strong interaction
→
|
| hasBranchingRatioToHadrons |
about 68%
→
|
| hasBranchingRatioToLeptons |
about 32%
→
|
| hasChargeConjugation |
not an eigenstate of C
→
|
| hasChargeCurrent |
V–A structure
→
|
| hasColorCharge |
colorless
→
|
| hasDiscoveryFacility |
Super Proton Synchrotron
→
|
| hasElectricCharge |
+1 e
→
-1 e → |
| hasHelicity |
±1
→
|
| hasInteraction |
weak interaction
→
|
| hasIsospin |
1
→
|
| hasMass |
about 1.43×10^-25 kg
→
about 80.379 GeV/c^2 → |
| hasNameOrigin |
weak force
→
|
| hasParity |
-1
→
|
| hasRestLifetime |
about 3×10^-25 s
→
|
| hasSpin |
1
→
|
| hasStatistics |
bosonic
→
|
| hasSymbol |
W
→
|
| hasVariant |
W+ boson
→
W- boson → |
| hasWeakIsospin |
1
→
|
| hasWidth |
about 2.085 GeV
→
|
| isChargedCurrentMediator |
true
→
|
| isComposite |
false
→
|
| isFundamental |
true
→
|
| isGaugeBosonOf |
SU(2)_L
→
|
| isMassive |
true
→
|
| isPartnerOf |
Z boson
→
|
| isPartOf |
electroweak gauge bosons
→
|
| isProducedIn |
electron–positron collisions
→
proton–antiproton collisions → proton–proton collisions → |
| isRelevantFor |
CP violation studies
→
collider phenomenology → flavor physics → |
| isShortLived |
true
→
|
| isTestedBy |
precision electroweak measurements
→
|
| mediates |
weak nuclear force
→
|
| mediatesProcess |
beta decay
→
lepton flavor changing weak processes → muon decay → nuclear beta minus decay → nuclear beta plus decay → |
| obeys |
Bose–Einstein statistics
→
|
| participatesIn |
electroweak interaction
→
|
| partOf |
Standard Model
→
|
| wasDiscoveredAt |
CERN
→
|
| wasDiscoveredBy |
UA1 experiment
→
UA2 experiment → |
| wasDiscoveredIn |
1983
→
|
| wasPredictedBy |
Abdus Salam
→
Sheldon Glashow → Steven Weinberg → electroweak theory → |
Referenced by (18)
| Subject (surface form when different) | Predicate |
|---|---|
|
Higgs boson
→
Higgs field → Higgs mechanism → |
givesMassTo |
|
W boson
("W+ boson")
→
W boson ("W- boson") → |
hasVariant |
|
Z boson
("W+ boson")
→
Z boson ("W- boson") → |
isRelatedTo |
|
Salam–Weinberg model
→
Standard Model → |
predicts |
|
Standard Model
→
|
containsParticle |
|
DØ detector
("W boson mass")
→
|
contributedToMeasurementOf |
|
W boson
→
|
couplesTo |
|
CERN
→
|
discovered |
|
boson
→
|
includesExample |
|
Drell–Yan processes
→
|
mediatedBy |
|
Z boson
("W+ boson")
→
|
relatedParticle |
|
UA1 experiment
→
|
researchArea |
|
UA2 experiment
→
|
studiedParticle |