Ps states
Particle-antiparticle interactions
S = J
l
C
K
Lifetimes (s)
Singlet 
(antisymmetric)
0
0
+1
−1
1.25 × 10−10
Triplet 
(symmetric)
1
0
−1
−1
1.42 × 10−7
| Ps states | Particle-antiparticle interactions | ||||
| S = J | l | C | K | Lifetimes (s) | |
| Singlet | 0 | 0 | +1 | −1 | 1.25 × 10−10 |
| Triplet | 1 | 0 | −1 | −1 | 1.42 × 10−7 |