Pion re-scattering operator in the S-matrix approach
Nuclear Theory
2009-11-10 v1
Abstract
The pion re-scattering operator for pion production, derived recently in time-ordered perturbation theory, is compared with the one following from the simple S-matrix construction. We show that this construction is equivalent to the on-shell approximation introduced in previous papers. For a realistic NN interaction, the S-matrix approach, and its simplified fixed threshold-kinematics version, work well near threshold.
Cite
@article{arxiv.nucl-th/0411049,
title = {Pion re-scattering operator in the S-matrix approach},
author = {V. Malafaia and J. Adam and M. T. Pena},
journal= {arXiv preprint arXiv:nucl-th/0411049},
year = {2009}
}
Comments
17 pages, 7 figures