particle

antiparticle

Meson pair

I

I₃

Strangeness

$p^{+}$

$p^{-}$

${\pi }^{+}+{\pi }^0$

1

1

0

$n^0\left(p^0\right)$

$n^0\left(p^0\right)$

${\pi }^{+}+{\pi }^{-}$

1

0

0

$p^{-}$

$p^{+}$

${\pi }^{-}+{\pi }^0$

1

−1

0

${\Lambda }^0$

${\Lambda }^0$

${\pi }^{+}+k^{-}$

or ${\pi }^{-}+k^{+}$

0

0

0

${\Sigma }^{+}$

${\Sigma }^{-}$

${\pi }^{+}+{\eta }^0$

1

1

0

${\Sigma }^0$

${\Sigma }^0$

${\pi }^0+{\eta }^0$

1

0

0

${\Sigma }^{-}$

${\Sigma }^{+}$

${\pi }^{-}+{\eta }^0$

1

−1

0

${\text{Ξ}}^{+}$

${\Xi }^{-}$

${\pi }^0+k^{+}$

$\frac{1}{2}$

$\frac{1}{2}$

1

${\Xi }^{-}$

${\text{Ξ}}^{+}$

${\pi }^0+k^{-}$

$\frac{1}{2}$

$-\frac{1}{2}$

−1

${\Xi }^0$

${\Xi }^0$

${\pi }^{+}+k^{-}$

or ${\pi }^{-}+k^{+}$

0

0

0