Short-range three-nucleon forces and low-energy constants
Abstract
The 3N forces due to pi-rho, pi-sigma and pi-omega exchanges following from the nucleon Born diagrams and diagrams with an intermediate N^{*}(1440) are re-analyzed. The cancellation between pi-sigma and pi-omega forces is rather sensitive to the values of the coupling constants and to the form of the piNN vertex. Experimental uncertainties in the parameters of the TM pi-pi potential are assessed. They lead to uncertainties in theoretical predictions of the triton binding energy of about 0.4 MeV. The low-energy limit of pi-sigma and pi-omega potentials is performed. It defines the coupling constants of effective contact piNNNN vertices, which are compared with the corresponding contact vertices of Chiral Perturbation Theory.
Cite
@article{arxiv.nucl-th/0308032,
title = {Short-range three-nucleon forces and low-energy constants},
author = {J. Adam, and M. T. Pena and A. Stadler},
journal= {arXiv preprint arXiv:nucl-th/0308032},
year = {2012}
}
Comments
41 pages, 3 figures (4 *.eps files)