V_CKM
E815588
V_CKM is the standard symbol for the Cabibbo–Kobayashi–Maskawa matrix, a unitary matrix in the Standard Model of particle physics that quantifies quark flavor mixing and CP violation in weak interactions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| V_CKM canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9689282 — 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: V_CKM Context triple: [Cabibbo–Kobayashi–Maskawa matrix, symbol, V_CKM]
-
A.
VCK
VCK is a Tamil Nadu–based political party in India known for its advocacy of Dalit rights and social justice.
-
B.
CVK
CVK is a major campus of Charité – Universitätsmedizin Berlin, housing extensive clinical and research facilities in the Wedding district of Berlin.
-
C.
.vc
.vc is the country code top-level domain (ccTLD) assigned to Saint Vincent and the Grenadines, often also used creatively for various commercial and personal websites.
-
D.
VVCI
VVCI is the ICAO airport code for Cat Bi International Airport in Hai Phong, Vietnam.
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E.
CVM
CVM is the U.S. Food and Drug Administration’s Center for Veterinary Medicine, which regulates the safety and effectiveness of animal drugs and medicated feeds.
- 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: V_CKM Target entity description: V_CKM is the standard symbol for the Cabibbo–Kobayashi–Maskawa matrix, a unitary matrix in the Standard Model of particle physics that quantifies quark flavor mixing and CP violation in weak interactions.
-
A.
VCK
VCK is a Tamil Nadu–based political party in India known for its advocacy of Dalit rights and social justice.
-
B.
CVK
CVK is a major campus of Charité – Universitätsmedizin Berlin, housing extensive clinical and research facilities in the Wedding district of Berlin.
-
C.
.vc
.vc is the country code top-level domain (ccTLD) assigned to Saint Vincent and the Grenadines, often also used creatively for various commercial and personal websites.
-
D.
VVCI
VVCI is the ICAO airport code for Cat Bi International Airport in Hai Phong, Vietnam.
-
E.
CVM
CVM is the U.S. Food and Drug Administration’s Center for Veterinary Medicine, which regulates the safety and effectiveness of animal drugs and medicated feeds.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
CKM matrix
ⓘ
flavor mixing matrix ⓘ physical constant matrix ⓘ unitary matrix ⓘ |
| appearsIn | quark sector of the Standard Model Lagrangian ⓘ |
| appliesTo |
down-type quarks
ⓘ
up-type quarks ⓘ |
| constrains | unitarity triangles ⓘ |
| definedBetween | up, charm, top quarks and down, strange, bottom quarks ⓘ |
| dependsOn | Yukawa couplings of quarks ⓘ |
| describes |
CP violation in weak interactions
ⓘ
quark flavor mixing ⓘ |
| ensures | absence of flavor-changing neutral currents at tree level ⓘ |
| hasElement |
V_cb
ⓘ
V_cd ⓘ V_cs ⓘ V_tb ⓘ V_td ⓘ V_ts ⓘ V_ub ⓘ V_ud ⓘ V_us ⓘ |
| hasProperty |
3×3 complex matrix
ⓘ
contains one irreducible complex phase ⓘ encodes CP-violating phase ⓘ parameterized by three mixing angles and one phase ⓘ unitarity ⓘ |
| hasRole | source of CP violation in the quark sector ⓘ |
| introducedBy |
Makoto Kobayashi
NERFINISHED
ⓘ
Nicola Cabibbo ⓘ Toshihide Maskawa ⓘ |
| namedAfter |
Cabibbo–Kobayashi–Maskawa theory of quark mixing
ⓘ
linked to:
Cabibbo–Kobayashi–Maskawa matrix
|
| parameterizedBy |
Wolfenstein parameters
ⓘ
standard PDG parameterization ⓘ |
| partOf |
Standard Model of particle physics
ⓘ
linked to:
Standard Model
|
| relates |
mass eigenstates of quarks
ⓘ
weak interaction eigenstates of quarks ⓘ |
| symbolFor | Cabibbo–Kobayashi–Maskawa matrix ⓘ |
| testedBy |
B-factory experiments
ⓘ
LHCb experiment ⓘ
linked to:
LHCb
flavor physics experiments ⓘ |
| usedIn |
B meson physics
ⓘ
D meson physics ⓘ K meson physics ⓘ W boson couplings to quarks ⓘ charged-current weak interactions ⓘ flavor-changing weak decays ⓘ top quark decay analyses ⓘ |
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: V_CKM Description of subject: V_CKM is the standard symbol for the Cabibbo–Kobayashi–Maskawa matrix, a unitary matrix in the Standard Model of particle physics that quantifies quark flavor mixing and CP violation in weak interactions.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.