K_S^0
E543036
K_S^0 is the short-lived neutral kaon, a subatomic meson that participates in weak interactions and exhibits CP-violating behavior.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
meson
ⓘ
neutral kaon ⓘ |
| belongsToFamily |
kaon
GENERATED
ⓘ
strange meson GENERATED ⓘ |
| decaysViaInteraction | weak interaction GENERATED ⓘ |
| differsFrom | K_L^0 in lifetime and CP properties GENERATED ⓘ |
| dominantDecayMode |
π^+ π^-
GENERATED
ⓘ
π^0 π^0 GENERATED ⓘ |
| exhibitsPhenomenon | CP violation GENERATED ⓘ |
| hasAntiparticle | itself (self-conjugate state in good approximation) GENERATED ⓘ |
| hasBaryonNumber | 0 GENERATED ⓘ |
| hasBranchingFractionToπ+π- | about 69% (approximate) GENERATED ⓘ |
| hasBranchingFractionToπ0π0 | about 31% (approximate) GENERATED ⓘ |
| hasElectricCharge | 0 GENERATED ⓘ |
| hasIsospin | 1/2 GENERATED ⓘ |
| hasMass | about 497.6 MeV/c^2 GENERATED ⓘ |
| hasMeanLifetime |
about 89.5 picoseconds
GENERATED
ⓘ
approximately 0.895×10^-10 s GENERATED ⓘ |
| hasParity | -1 GENERATED ⓘ |
| hasQuantumNumber |
C = not well-defined for open-flavor meson
GENERATED
ⓘ
G = not applicable GENERATED ⓘ |
| hasQuarkContent | d s̄ + s d̄ (quantum superposition) GENERATED ⓘ |
| hasQuarkFlavor |
down
GENERATED
ⓘ
strange GENERATED ⓘ |
| hasRestFrameDecayLength | about 2.68 cm GENERATED ⓘ |
| hasSpin | 0 GENERATED ⓘ |
| hasStrangeness | +1 GENERATED ⓘ |
| hasTotalAngularMomentumJ | 0 GENERATED ⓘ |
| isAlsoCalled |
K-short
GENERATED
ⓘ
K_S GENERATED ⓘ short-lived neutral kaon GENERATED ⓘ |
| isCPApproximateEigenstate | CP = +1 GENERATED ⓘ |
| isDescribedBy | neutral kaon mixing formalism GENERATED ⓘ |
| isEigenstateOf | effective weak Hamiltonian in K^0–K̄^0 system GENERATED ⓘ |
| isObservedIn |
collider experiments
GENERATED
ⓘ
kaon beam experiments GENERATED ⓘ |
| isProducedIn | strong interactions involving strange quark production GENERATED ⓘ |
| isQuantumSuperpositionOf |
K^0
GENERATED
ⓘ
K̄^0 GENERATED ⓘ |
| isShortLivedPartnerOf | K_L^0 GENERATED ⓘ |
| isUsedToTest |
CP symmetry
GENERATED
ⓘ
CPT symmetry GENERATED ⓘ Standard Model flavor physics GENERATED ⓘ |
| participatesInInteraction |
electromagnetic interaction
GENERATED
ⓘ
strong interaction GENERATED ⓘ weak interaction GENERATED ⓘ |
| undergoes | K^0–K̄^0 oscillations GENERATED ⓘ |
| wasCrucialForDiscoveryOf | CP violation in neutral kaons GENERATED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.