# $\pi \rightarrow \gamma \gamma$ spin,C,P

1. Jun 12, 2015

### ChrisVer

I was just wondering... Is it possible to explain the J,C,P of the $\pi^0$, $J^{CP}=0^{+-}$ just from the diphoton decay?
$\pi^0 \rightarrow \gamma \gamma$

The $C$ is straightforward.
However are the $J,P$ deduced by this interaction alone?

2. Jun 12, 2015