Abstract

The Roper resonance is considered as a mixed state of a three-quark core configuration and a hadron-molecular component N + sigma. Based on this ansatz we study electroproduction of the Roper resonance. The strong and electromagnetic couplings induced by the quark core are calculated in the P-3(0) model. The contribution of the vector-meson cloud to the electromagnetic transition is given in the framework of the vector-meson dominance model. Results are compared with the recent JLab electroproduction data.