|
gptkbp:instanceOf
|
gptkb:Subatomic_particle
gptkb:Meson
|
|
gptkbp:antiparticle
|
π- is antiparticle of π+
π0 is its own antiparticle
|
|
gptkbp:chargeConjugation
|
π0: +1
|
|
gptkbp:color
|
colorless
|
|
gptkbp:composition
|
quark-antiquark pair
|
|
gptkbp:contentType
|
down and anti-up
up and anti-down
up and anti-up / down and anti-down (for π0)
|
|
gptkbp:CPParity
|
π0: +1
|
|
gptkbp:discoveredBy
|
gptkb:Cecil_Powell
|
|
gptkbp:discoveredIn
|
1947
|
|
gptkbp:family
|
gptkb:hadron
|
|
gptkbp:firstObserved
|
gptkb:University_of_Bristol
|
|
gptkbp:foundIn
|
gptkb:particle_accelerators
cosmic rays
|
|
gptkbp:interactsWith
|
gptkb:weak_interaction
electromagnetic interaction
strong interaction
|
|
gptkbp:isospin
|
1
|
|
gptkbp:lifespan
|
2.6×10^-8 s (π+ and π-)
8.4×10^-17 s (π0)
|
|
gptkbp:mass
|
135.0 MeV/c^2 (π0)
139.6 MeV/c^2 (π+ and π-)
|
|
gptkbp:mode
|
muon and neutrino (π+ and π-)
two photons (π0)
|
|
gptkbp:namedAfter
|
Greek letter pi (π)
|
|
gptkbp:par
|
-1
|
|
gptkbp:range
|
+1
0
-1
|
|
gptkbp:role
|
mediator of strong nuclear force (Yukawa interaction)
|
|
gptkbp:spin
|
0
|
|
gptkbp:statistic
|
gptkb:boson
|
|
gptkbp:symbol
|
π
π+ π- π0
|
|
gptkbp:uses
|
medical physics (pion therapy)
study of strong force
study of weak interactions
|
|
gptkbp:bfsParent
|
gptkb:Glueball
|
|
gptkbp:bfsLayer
|
8
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Pions
|