- #1

Blue_Angel

- 3

- 0

## Homework Statement

Earlier my teacher put this equation on the board,

π_0 --> γ+γ

It appears to work until you consider spin.

## Homework Equations

a quick google search reveals that the spin of a photon is +1 and the spin of a pi meson is 0

## The Attempt at a Solution

This appears to work for momentum, energy, charge, baryon number...

But π_0 has no spin and γ has a spin of +1.

So in essence the atomic spin starts at 0 and finishes at +2.

What am I missing?