# Spin and parity predictions from kaon decay

1. Mar 17, 2012

### Cehem

Hello ,

1. The problem statement, all variables and given/known data

I'm supposed to find restrictions for the spin and parity of the Kaon from the the following decay : $$K^0 \rightarrow \pi^0 \pi^0$$

2. Relevant equations
The only thing I know is that $\pi^0$ spin-parity is $0^-$

3. The attempt at a solution
I said that the spin of the Kaon is just the relative angular momentum L of the two pions and that the parity must be (-1)L+2. But this doesn't give any restrictions and I don't know what to do next.
I hope someone can help me. Thanks