Electromagnetic currents of the pion-nucleon system
arXiv:1810.06035 · doi:10.1103/PhysRevC.99.034001
Abstract
Pion photoproduction amplitudes are calculated from a set of equations that have been derived by coupling an external photon to all places in a dressed pion-nucleon vertex. The calculation is consistent with gauge invariance, charge conservation, unitarity and covariance. To provide input to the photoproduction amplitude, a photon-nucleon vertex is calculated from a set of equations derived by complete attachment of photons to a dressed nucleon propagator. We check the accuracy of this vertex by extracting its nucleon electromagnetic form factors.
18 pages, 8 figures
References in corpus (7)
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