V_cs

E815590

V_cs is the element of the Cabibbo–Kobayashi–Maskawa (CKM) quark-mixing matrix that quantifies the weak-interaction coupling between charm and strange quarks.

All labels observed (1)

Label Occurrences
V_cs canonical 1

How this entity was disambiguated

Statements (30)

Predicate Object
instanceOf CKM matrix element
quark-mixing matrix element
appearsIn Standard Model of particle physics
linked to: Standard Model
closeTo cos(Cabibbo angle)
constrainedBy experimental measurements of charm decays
global CKM fits
couplesQuarkFlavor charm quark
strange quark
dependsOn CKM parametrization (e.g. Wolfenstein, standard PDG)
describes weak-interaction coupling between charm and strange quarks
dominates charm to strange charged-current transitions
elementOf second generation quark mixing sector
hasMagnitudeApproximately 0.973
hasMagnitudeLessThan 1
hasMagnitudeUncertaintyApprox 0.0001–0.0002
hasPhase small CP-violating phase in standard CKM parametrizations
isComplexNumber true
matrixPosition second row, second column of CKM matrix
partOf CKM matrix
Cabibbo–Kobayashi–Maskawa matrix
relatedTo Cabibbo angle
linked to: Cabibbo theory
satisfies unitarity constraints of CKM matrix
suppressesRelativeTo V_cd in c→d transitions
symbolOf |V_cs| for its magnitude
usedIn calculations of charm quark weak decays
leptonic D_s meson decay analyses
semileptonic D meson decay analyses
tests of CKM unitarity
usedToTest Standard Model flavor structure
linked to: Standard Model

lepton–quark universality via charm decays

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.