# Pair production crossection

1. Oct 1, 2008

### malawi_glenn

Hi

I am looking for a source wich covers a differential crossection for pair production of electrons and positrons due to photons.

$$\frac{d^2\sigma}{dEd\Omega}$$

I need it to be valid for high relativistic energies of electrons/positrons and for all angels. I can only find formulas wich are valid for small opening angels :(

(Rev. Mod. Phys. 41, 581 - 639 (1969) Pair Production by Photons)