Statements (41)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Subatomic particle
|
| gptkbp:antiparticle |
self (π0)
π+ (for π-) π- (for π+) |
| gptkbp:category |
Particle
meson boson |
| gptkbp:contentType |
down and anti-up (π-)
up and anti-down (π+) up and anti-up or down and anti-down (π0) |
| gptkbp:discoveredBy |
gptkb:Cecil_Powell
|
| gptkbp:discoveredIn |
1947
|
| gptkbp:foundIn |
gptkb:particle_accelerators
cosmic rays |
| gptkbp:hasType |
gptkb:π+_(pi-plus)
gptkb:π-_(pi-minus) π0 (pi-zero) |
| https://www.w3.org/2000/01/rdf-schema#label |
Pion
|
| gptkbp:interactsWith |
gptkb:weak_interaction
electromagnetic interaction strong interaction |
| gptkbp:isBoson |
true
|
| gptkbp:isMeson |
true
|
| gptkbp:isospin |
1
|
| gptkbp:lifespan |
2.6×10⁻⁸ s (π+ and π-)
8.4×10⁻¹⁷ s (π0) |
| gptkbp:mass |
135.0 MeV/c² (π0)
139.6 MeV/c² (π+ and π-) |
| gptkbp:mode |
2γ (π0)
μ+ and νμ (π+) μ- and anti-νμ (π-) |
| gptkbp:namedAfter |
Greek letter pi (π)
|
| gptkbp:par |
-1
|
| gptkbp:range |
+1 (π+)
-1 (π-) 0 (π0) |
| gptkbp:roleInPhysics |
mediator of strong nuclear force (Yukawa theory)
|
| gptkbp:spin |
0
|
| gptkbp:symbol |
π
|
| gptkbp:bfsParent |
gptkb:WebRTC
|
| gptkbp:bfsLayer |
4
|