Thomas Gutsche, Valery E. Lyubovitskij, Ivan Schmidt, Alfredo Vega
We describe the electroproduction of the N(1440) Roper resonance in soft-wall AdS/QCQ. The Roper resonance is identified as the first radially excited state of the nucleon, where higher-Fock states in addition to the three-quark component are included. The main conclusion is that the leading 3q component plays the dominant role in the description of electroproduction properties of this resonance: form factors, helicity amplitudes and charge densities. The obtained results are in good agreement with the recent results of the CLAS Collaboration at JLab.
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http://arxiv.org/abs/1212.6252
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