Studying the production mechanisms of light meson resonances in two-pion photoproduction

A theoretical model of two-pion photoproduction is presented. The model encodes the prominent $\rho (770)$ resonance and the expected leading background contribution coming from the Deck mechanism. To validate the model, angular moments are computed and compared with the CLAS dataset. After fitting a number of free parameters, the model provides a good description of the data.