Pion
= Pion
{title2=$\pi$}
{wiki}
A pion is one of the light pseudoscalar mesons produced by chiral symmetry breaking in quantum chromodynamics. The charge states are $\pi^+$, $\pi^0$ and $\pi^-$.
= Pion
{title2=$\pi$}
{wiki}
A pion is one of the light pseudoscalar mesons produced by chiral symmetry breaking in quantum chromodynamics. The charge states are $\pi^+$, $\pi^0$ and $\pi^-$.