Υ(4S) resonance
E565043
The Υ(4S) resonance is an excited bottomonium state that lies just above the threshold for B-meson pair production and is widely used at B-factories to study B-meson decays and CP violation.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Υ(4S) | 0 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
bottomonium state
ⓘ
quarkonium state ⓘ resonance ⓘ vector meson ⓘ |
| belongsToFamily | Υ resonances ⓘ |
| dominantDecayMode |
B-meson pair
ⓘ
B^+ B^- NERFINISHED ⓘ B^0 B̄^0 ⓘ |
| hasBaryonNumber | 0 ⓘ |
| hasBottomness | 0 ⓘ |
| hasChargeConjugationParity | -1 ⓘ |
| hasCharmness | 0 ⓘ |
| hasDecayProduct |
B meson
NERFINISHED
ⓘ
B̄ meson NERFINISHED ⓘ |
| hasElectricCharge | 0 ⓘ |
| hasFlavorContent | bottom–antibottom quark pair ⓘ |
| hasIsospin | 0 ⓘ |
| hasJPCC | 1^{--} ⓘ |
| hasLifetime | about 3×10^{-23} s ⓘ |
| hasMass |
about 10.58 GeV/c^2
ⓘ
approximately 10579 MeV/c^2 ⓘ |
| hasOrbitalAngularMomentumL | 0 ⓘ |
| hasParity | -1 ⓘ |
| hasPrincipalQuantumNumber | 4 ⓘ |
| hasProductionMechanism | e^+ e^- → Υ(4S) ⓘ |
| hasQuantumNumbers | I^G(J^{PC}) = 0^-(1^{--}) ⓘ |
| hasQuarkContent | b b̄ ⓘ |
| hasSpectroscopicNotation | 4S ⓘ |
| hasSpin | 1 ⓘ |
| hasStrangeness | 0 ⓘ |
| hasSymbol | Υ(4S) ⓘ |
| hasTotalAngularMomentumJ | 1 ⓘ |
| hasWidth | about 20 MeV ⓘ |
| isElectricallyCharged | no ⓘ |
| isEnergyLevelOf | bottomonium NERFINISHED ⓘ |
| isHeavierThan | Υ(3S) ⓘ |
| isLighterThan | Υ(5S) ⓘ |
| isProducedIn | electron–positron annihilation ⓘ |
| isRadialExcitationOf | Υ(1S) ⓘ |
| isResonanceIn | e^+ e^- → hadrons cross section near 10.58 GeV ⓘ |
| isRunEnergyOf |
KEKB collider
NERFINISHED
ⓘ
PEP-II collider NERFINISHED ⓘ |
| isStudiedByExperiment |
BaBar
NERFINISHED
ⓘ
Belle NERFINISHED ⓘ |
| isUsedAt | B-factories NERFINISHED ⓘ |
| isUsedToStudy |
B-meson decays
ⓘ
CP violation in the B system ⓘ |
| liesAboveThresholdFor |
B^+ B^- production
ⓘ
B^0 B̄^0 production ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.