The Status of the Pion-Nucleon Coupling Constant
Abstract
A review is given of the various determinations of the different piNN coupling constants in analyses of the low-energy pp, np, pbarp, and pi-p scattering data. The most accurate determinations are in the energy-dependent partial-wave analyses of the NN data. The recommended value is f^2 = 0.075 . A recent determination of f^2 by the Uppsala group from backward np cross sections is shown to be model dependent and inaccurate, and therefore completely uninteresting. We also argue that an accurate determination of f^2 using pp forward dispersion relations is not a realistic option.
Keywords
Cite
@article{arxiv.nucl-th/9802084,
title = {The Status of the Pion-Nucleon Coupling Constant},
author = {J. J. de Swart and M. C. M. Rentmeester and R. G. E. Timmermans},
journal= {arXiv preprint arXiv:nucl-th/9802084},
year = {2011}
}
Comments
19 pages, latex2e with a4wide.sty, more information is available at http://NN-OnLine.sci.kun.nl . Invited talk at FBXV, Groningen, The Netherlands, July 22-26, 1997. Invited talk at MENU97, Vancouver, B.C., Canada, July 28 - August 1, 1997