Pion photoproduction in a dynamical coupled-channel model
Abstract
Pion photoproduction reactions are investigated in a dynamical coupled-channel approach based on the Juelich pi-N model, which presently includes the hadronic pi-N and eta-N stable channels as well as the pi-Delta, sigma-N and rho-N effective channels. This model has been quite successful in the description of pi-N to pi-N scattering for center-of-mass energies up to 1.9 GeV. The full pion photoproduction amplitude is constructed to satisfy the generalized Ward-Takahashi identity and hence, it is fully gauge invariant. The calculated differential cross sections and photon spin asymmetries up to 1.65 GeV center-of-mass energy for the reactions gamma p to pi+ n, gamma p to pi0 p and gamma n to pi- p are in good agreement with the experimental data.
Cite
@article{arxiv.1010.0714,
title = {Pion photoproduction in a dynamical coupled-channel model},
author = {F. Huang and M. Döring and H. Haberzettl and S. Krewald and K. Nakayama},
journal= {arXiv preprint arXiv:1010.0714},
year = {2015}
}
Comments
Invited talk given at 12th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon (MENU2010), Williamsburg, USA, May 31-June 4 2010