Electromagnetic Couplings of Nucleon Resonances

Details Electromagnetic Couplings of Nucleon Resonances Electromagnetic Couplings of Nucleon Resonances

1996-04-17

arxiv.org/abs/nucl-th/9604026v2

Nucl.Phys. A612 (1997) 375-390

Physics

Nuclear Physics

Nuclear Theory

20 pages, latex, 6 figures. Misprints corrected, text & 3 figures added

Scientific paper

10.1016/S0375-9474(96)00419-8

An effective Lagrangian calculation of pion photoproduction including all nucleon resonances up to $\sqrt s = 1.7$ GeV is presented. We compare our results to recent calculations and show the influence of different width parametrizations and offshell cutoffs on the photoproduction multipoles. We determine the electromagnetic couplings of the resonances from a new fit to the multipole data.

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