[show abstract][hide abstract] 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 3P0 model. The
contribution of the vector meson cloud to the electromagnetic transition is
given in the framework of the VMD model. Results are compared with the recent
JLab electroproduction data.
Physical review D: Particles and fields 04/2011; 84.