Dynamical coupled-channels model study of pion photoproduction
Abstract
The photoproduction of pion off nucleon is investigated within a dynamical coupled-channels approach based on the Juelich pi-N model, which 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 pi^0 p and gamma n to pi^- p are in good agreement with the experimental data.
Cite
@article{arxiv.1109.4354,
title = {Dynamical coupled-channels model study of pion photoproduction},
author = {F. Huang and M. Döring and H. Haberzettl and J. Haidenbauer and C. Hanhart and S. Krewald and U. -G. Meißner and K. Nakayama},
journal= {arXiv preprint arXiv:1109.4354},
year = {2016}
}
Comments
Talk given at The 8th International Workshop on the Physics of Excited Nucleons (NSTAR2011), May 17-20, 2011, Thomas Jefferson National Accelerator Facility, Newport News, Virginia, USA