Semiphenomenological nucleon-nucleon potentials

Statistical uncertainties of a chiral interaction at next-to-next-to leading order

“…Regarding the uncertainties of the effective range parameters, they again reflect the fact that the pp scattering data is more precise than the np data. Our model predictions for the pp parameters are consistent with the analysis of [26]. We have also determined the uncertainties for a selected set of partial-wave phase shifts; see table 5 and plotted in figure 5.…”

Phase shift analysis of 0–30 MeV pp scattering data

“…(ii) Both the Nijmegen (N78) [27] and the Paris (P80) [28] potential give a too large ∆ T and a too small ∆ LS at 10 MeV. This has already been discussed elsewhere [94]. Probably this shows a flaw in the treatment of the medium range forces in these potential models.…”

The Nijmegen Potentials

“…It was unfortunate that at that time in 1975, when we found this low value, we were so brainwashed by the πN-community in thinking that f 2 /4π ≃ 0.080, that we did not take this result very seriously. It lasted till 1984 before we were convinced that the πNN-coupling constant was indeed so low [24]. This low value for the πNN-coupling constant resulted in a very good deuteron in Nijm D. For the d/s ratio we then found η = 0.0251.…”

“…A large part of the efforts of the Nijmegen group in the last decennia has been concentrated on the study of the baryon-baryon [1,2,3], as well as the antibaryon-baryon interaction [4,5]. In first instance this has been the construction of potentials [6,7,8,9,10], but later also partial-wave analyses (PWA) of the experimental scattering data [11,12] were performed.…”

“…All Nijmegen NN-potentials (except the HQ-potentials) were developed with in the back of our minds the extension to the YN-channels. This required treatments which could be generalized to the other channels with the help of SU (3). One needs therefore to include exchanges of all mesons of the same meson nonet.…”