Weinberg angle
E140688
The Weinberg angle, also known as the weak mixing angle, is a fundamental parameter in the electroweak theory that quantifies the mixing of electromagnetic and weak forces and determines the relative strengths of their interactions.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Weinberg angle canonical | 2 |
| weak mixing angle | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1225526 — 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: Weinberg angle Context triple: [Steven Weinberg, knownFor, Weinberg angle]
-
A.
Fermi constant
The Fermi constant is a fundamental physical constant that quantifies the strength of the weak nuclear force in processes such as beta decay.
-
B.
Salam–Weinberg model
The Salam–Weinberg model is the electroweak theory that unifies the electromagnetic and weak nuclear forces within the Standard Model of particle physics.
-
C.
W boson
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.
-
D.
Higgs boson
The Higgs boson is an elementary particle in the Standard Model whose associated field gives mass to other fundamental particles, confirming a key mechanism of particle physics.
-
E.
Gell-Mann–Nishijima formula
The Gell-Mann–Nishijima formula is a key relation in particle physics that connects a particle’s electric charge to its isospin and hypercharge, helping classify hadrons within the quark model.
- 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: Weinberg angle Target entity description: The Weinberg angle, also known as the weak mixing angle, is a fundamental parameter in the electroweak theory that quantifies the mixing of electromagnetic and weak forces and determines the relative strengths of their interactions.
-
A.
Fermi constant
The Fermi constant is a fundamental physical constant that quantifies the strength of the weak nuclear force in processes such as beta decay.
-
B.
Salam–Weinberg model
The Salam–Weinberg model is the electroweak theory that unifies the electromagnetic and weak nuclear forces within the Standard Model of particle physics.
-
C.
W boson
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.
-
D.
Higgs boson
The Higgs boson is an elementary particle in the Standard Model whose associated field gives mass to other fundamental particles, confirming a key mechanism of particle physics.
-
E.
Gell-Mann–Nishijima formula
The Gell-Mann–Nishijima formula is a key relation in particle physics that connects a particle’s electric charge to its isospin and hypercharge, helping classify hadrons within the quark model.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
electroweak parameter
ⓘ
parameter of the Standard Model ⓘ physical constant ⓘ |
| alsoKnownAs |
weak mixing angle
ⓘ
linked to:
Weinberg angle
|
| appearsIn |
W boson couplings
ⓘ
Z boson couplings ⓘ charged current interactions ⓘ electroweak unification ⓘ fermion neutral current couplings ⓘ neutral current interactions ⓘ |
| crucialFor |
prediction of W and Z boson masses
ⓘ
structure of neutral current interactions ⓘ |
| defines |
Z boson field Z_μ
ⓘ
linked to:
Z boson
mixing of W^3 and B gauge fields ⓘ photon field A_μ ⓘ |
| definesMixingOf |
electromagnetic interaction
ⓘ
weak interaction ⓘ |
| determines | relative strength of weak and electromagnetic interactions ⓘ |
| field |
electroweak theory
ⓘ
linked to:
Salam–Weinberg model
particle physics ⓘ |
| hasApproximateValue | sin^2 θ_W ≈ 0.23 at the Z boson mass scale ⓘ |
| introducedInContextOf | electroweak unification theory ⓘ |
| mathematicalRelation |
A_μ = B_μ cos θ_W + W^3_μ sin θ_W
ⓘ
Z_μ = -B_μ sin θ_W + W^3_μ cos θ_W ⓘ e = g sin θ_W ⓘ e = g' cos θ_W ⓘ sin^2 θ_W = 1 - (M_W^2 / M_Z^2) ⓘ tan θ_W = g'/g ⓘ |
| measuredAt |
LEP collider
ⓘ
linked to:
Large Electron–Positron Collider
SLD experiment ⓘ |
| measuredIn | electroweak precision experiments ⓘ |
| measuredUsing |
atomic parity violation
ⓘ
deep inelastic scattering ⓘ neutrino scattering ⓘ |
| namedAfter | Steven Weinberg ⓘ |
| partOf |
Standard Model of particle physics
ⓘ
linked to:
Standard Model
|
| relatedTo |
SU(2)_L coupling g
ⓘ
U(1)_Y coupling g' ⓘ W boson mass M_W ⓘ Z boson mass M_Z ⓘ electric charge e ⓘ |
| relatesCouplingsOf |
SU(2)_L gauge group
ⓘ
linked to:
SU(2)_L
U(1)_Y gauge group ⓘ
linked to:
U(1)
|
| scaleDependent | yes ⓘ |
| subjectTo | renormalization group running ⓘ |
| symbol | θ_W ⓘ |
| usedIn |
calculations of parity violation
ⓘ
precision tests of the Standard Model ⓘ |
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: Weinberg angle Description of subject: The Weinberg angle, also known as the weak mixing angle, is a fundamental parameter in the electroweak theory that quantifies the mixing of electromagnetic and weak forces and determines the relative strengths of their interactions.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Weinberg angle