Statements (27)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:Particle gptkb:meson | 
| gptkbp:antiparticle | gptkb:pions | 
| gptkbp:composedOf | gptkb:Dragon gptkb:antiquark | 
| gptkbp:discoveredBy | gptkb:Cecil_Powell | 
| gptkbp:discoveredIn | 1947 | 
| gptkbp:hasType | gptkb:pi-minus gptkb:pi-plus pi-zero | 
| gptkbp:lifespan | 2.6×10^-8 s 8.4×10^-17 s | 
| gptkbp:mass | 135.0 MeV/c^2 139.6 MeV/c^2 | 
| gptkbp:medium | gptkb:strong_nuclear_force | 
| gptkbp:mode | muon and neutrino two photons | 
| gptkbp:namedAfter | Greek letter pi | 
| gptkbp:partOf | gptkb:nucleus | 
| gptkbp:range | +1 0 -1 | 
| gptkbp:spin | 0 | 
| gptkbp:symbol | π | 
| gptkbp:bfsParent | gptkb:Bose-Einstein_statistics | 
| gptkbp:bfsLayer | 5 | 
| https://www.w3.org/2000/01/rdf-schema#label | pions |