Phenomenological Phase-Parameter Fits toN−NData up to 350 MeV

Abstract

Results of phenomenological phase-parameter fits intended primarily for energies between somewhat below 10 and 350 MeV are presented in the form of tables suitable for interpolation. Comparisons of the pion-nucleon coupling constant as derived from $p-p$ and $n-p$ scattering data are made. Indications of a difference in the value of this constant are obtained. Though relatively small, this difference is outside the apparent statistical uncertainty of the determination. Some possible reasons for the difference are briefly discussed. A total of 1988 experimental data has been used. Corrections for the effect of nucleon magnetic moments, for Coulomb effects, and for short-range charge dependence are included.