Calculation of the anomalous $\gamma {\pi }^{\ast }\to \pi \pi$ form factor

R. Alkofer, C. D. Roberts

The form factor for the anomalous process $\gamma {\pi }^{\ast }\to \pi \pi$, $F^{3\pi }(s,t,u)$, is calculated as a phenomenological application of the QCD Dyson-Schwinger equations. The chiral-limit val…