Gauge-invariant approach to meson photoproduction including the final-state interaction
Nuclear Theory
2009-11-11 v2
Abstract
A fully gauge-invariant (pseudoscalar) meson photoproduction amplitude off a nucleon including the final-state interaction is derived. The approach based on a comprehensive field-theoretical formalism developed earlier by one of the authors replaces certain dynamical features of the full interaction current by phenomenological auxiliary contact currents. A procedure is outlined that allows for a systematic improvement of this approximation. The feasibility of the approach is illustrated by applying it to both the neutral and charged pion photoproductions.
Keywords
Cite
@article{arxiv.nucl-th/0605059,
title = {Gauge-invariant approach to meson photoproduction including the final-state interaction},
author = {H. Haberzettl and K. Nakayama and S. Krewald},
journal= {arXiv preprint arXiv:nucl-th/0605059},
year = {2009}
}
Comments
14 pages, 8 figures, RevTeX4; revised version as scheduled to appear in Physical Review C