Answer to Question #124989 in Atomic and Nuclear Physics for john carry

Question

what do you think of neutral pion decay shows CP violation? support your answer by experimental aspects.

Answer 1

According to the following equation neutral pions decay into 2 photons via electromagnetic force;

$\pi^0\to2\gamma$

The following equation shows the decay;

$\pi^0\to3\gamma$

The decay is not accepted because it violates C-Parity. there is no decay that follow the last equation experimental was observed.