Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
hadron
meson |
| gptkbp:contentType |
charm quark
charm antiquark |
| gptkbp:discoveredBy |
gptkb:Samuel_Ting
gptkb:Burton_Richter |
| gptkbp:discoveredIn |
1974
|
| https://www.w3.org/2000/01/rdf-schema#label |
psi meson
|
| gptkbp:lifespan |
7.2×10^-21 s
|
| gptkbp:locationDiscovered |
gptkb:Brookhaven_National_Laboratory
gptkb:SLAC |
| gptkbp:mass |
3.0969 GeV/c^2
|
| gptkbp:mode |
gptkb:hadrons
lepton pairs |
| gptkbp:otherName |
gptkb:J/psi_meson
|
| gptkbp:par |
-1
|
| gptkbp:range |
0
|
| gptkbp:significance |
evidence for charm quark
first observed charmonium state |
| gptkbp:spin |
1
|
| gptkbp:symbol |
gptkb:J/ψ
|
| gptkbp:bfsParent |
gptkb:J/ψ_particle
|
| gptkbp:bfsLayer |
6
|