Electromagnetic currents of the pion-nucleon system
Nuclear Theory
2019-03-13 v1
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.
Keywords
Cite
@article{arxiv.1810.06035,
title = {Electromagnetic currents of the pion-nucleon system},
author = {T. Skawronski and B. Blankleider and A. N. Kvinikhidze},
journal= {arXiv preprint arXiv:1810.06035},
year = {2019}
}
Comments
18 pages, 8 figures