Nucleon resonance electrocouplings in the non-perturbative regime

There is an extensive search for baryon resonances using the CLAS detector in Hall B of JLab. Extracting the transition helicity amplitudes (or the γvNN* photo- and electrocouplings) sheds light on nature of the non-perturbative strong interaction. We have extended the data on differential cross sections to Q2 = 6.0 GeV2 for the πN electroproduction channel. Electroproduction data were also collected on the two-charged-pion channel off protons, which provides nine independent differential π+π-p cross sections at Q2 up to 1.5 GeV2. The two-pion results, moreover, are consistent with those from independent πN electroproduction analyses, where the background contributions in the two-pion channel are completely different from that of the single-pion one. A phenomenological approach developed at Jefferson Lab - Moscow State University is employed for separating the resonant and non-resonant contributions to the final state. The Q2-dependent electrocouplings were then obtained for the P11(1440) and D13(1520) excited baryon states. The new data will be discussed in light of these new developments in systematically exploring the affects of meson-baryon dressing on the transition helicity amplitudes as a function of Q2.