Exchange state:

Particle; state Z1

Anti-Particle; state Z2

μ = 0

μ = 0

μ = 3

μ = 3

μ = 0

μ = 0

μ = 3

μ = 3

O

X

O

X

O

X

O

X

C

0

+

+

0

C

0

0

D

+

0

0

+

D

0

0

Particle state:

Particle; state Z2

Anti-Particle; state Z1

μ = 0

μ = 0

μ = 3

μ = 3

μ = 0

μ = 0

μ = 3

μ = 3

O

X

O

X

O

X

O

X

A

0

0

+

A

0

+

0

B

0

+

0

B

+

0

0