|
gptkbp:instanceOf
|
gptkb:Subatomic_particle
|
|
gptkbp:antiparticle
|
self (π0)
π+ (for π-)
π- (for π+)
|
|
gptkbp:category
|
gptkb:Particle
gptkb:meson
gptkb: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)
|
|
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
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Pion
|