I have a question about the neutral Pi-meson. One of the decay modes of the neutral pi-meson is to 2 photons. [tex]\pi^0 \rightarrow \gamma + \gamma[/tex] it seems to me that this electromagnetic process violates parity conservation. L.H.S. parity is -1. R.H.S. parity is (-1)(-1) = +1 Is there anything wrong?