Electron excitation of nucleon resonances: Structure functions and transition form factors

V.I. Rus'kin, P. B. Kharchevnikov

2001

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DOI 10.1134/1.1378884
Data confidence 70 medium
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Abstract

The electron excitation of nucleon resonances is discussed both from the theoretical and from the experimental point of view. This discussion is based on a phenomenological approach that employs the conservation of the electromagnetic and vector-meson hadronic currents and the requirements of limiting chiral invariance. For the electron excitation of J π =1/2 ± ,3/2 ± ,5/2 ± ,... nucleon resonances, the structure functions are defined in terms of Sachs transition form factors. The resulting resonance structure functions for l + N → l + R processes are used in parametrizing smooth (background) structure functions for l + N → l + X inelastic scattering.