Transition form factors and helicity amplitudes for electroexcitation of negative and positive parity nucleon resonances in a light-front quark model

Igor T. Obukhovsky, Amand Faessler, Dimitry K. Fedorov, Thomas Gutsche, Valery E. Lyubovitskij

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A workable basis of quark configurations s3, s2p and sp2 at light front has been constructed to describe the high-Q2 behavior of transition form factors and helicity amplitudes in the electroproduction of the lightest nucleon resonances, N1/2-(1535) and N1/2+(1440). High-quality data of the CLAS Collaboration are described in the framework of a model which takes into account mixing of the quark configurations and the hadron-molecular states. The model allows for a rough estimate of the quark core weight in the wave function of the resonance in a comparison with high momentum transfer data on resonance electroproduction.

Original languageEnglish
Article number094013
JournalPhysical Review D
Issue number9
Publication statusPublished - 15 Nov 2019


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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