Statements (29)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
meson
|
| gptkbp:antiparticle |
gptkb:eta_c
|
| gptkbp:baryonNumber |
0
|
| gptkbp:bottomness |
0
|
| gptkbp:chargeConjugationParity |
+1
|
| gptkbp:charm |
0
|
| gptkbp:color |
colorless
|
| gptkbp:contentType |
charm-anticharm
|
| gptkbp:discoveredBy |
SLAC-LBL collaboration
|
| gptkbp:discoveredIn |
1974
|
| gptkbp:family |
charmonium
|
| gptkbp:generation |
second
|
| https://www.w3.org/2000/01/rdf-schema#label |
eta c
|
| gptkbp:isospin |
0
|
| gptkbp:lifespan |
~2.98×10^-20 s
|
| gptkbp:mass |
2983.9 MeV/c^2
|
| gptkbp:mode |
hadronic
|
| gptkbp:par |
-1
|
| gptkbp:parentParticle |
J/psi
|
| gptkbp:range |
0
|
| gptkbp:spin |
0
|
| gptkbp:standardModelParticle |
no
|
| gptkbp:strangeness |
0
|
| gptkbp:symbol |
ηc
|
| gptkbp:topness |
0
|
| gptkbp:width |
32.0 MeV
|
| gptkbp:bfsParent |
gptkb:charmonium_family
gptkb:charmonium |
| gptkbp:bfsLayer |
7
|