ee^+-->\pi^0\gamma and form factor of \pi^0\gamma^*\gamma^*

Abstract

The form factor \pi^0\gamma^*\gamma^* is obtained to the next leading order of derivative expansion of the chiral anomaly and the VMD. As a test the form factor has been used to calculate the cross section of ee^+-->\pi^0\gamma. Theory agrees with data.

Comments: 18 pages 5 figures