Abstract

The lightest nucleon resonances are described at light front as mixed states of the 3q cluster ("quark core") possessing a definite value of the inner orbital momentum L = 0,1 and a hadron molecular state, N sigma or Lambda+ K. Helicity amplitudes of the resonance electroproduction off the proton are calculated at large Q(2) up to 12 GeV2 and compared to the last CLAS data. At this basis we have estimated the probability of quark core in lightest nucleon resonances and predicted the high Q(2) behaviour of the resonance electrocoupling.