https://doi.org/10.1140/epja/s10050-023-01161-x
Regular Article - Theoretical Physics
Comparison of N̄N optical models
1
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
2
National Centre for Nuclear Research, Warsaw, Poland
a
jaume.carbonell@ijclab.in2p3.fr
Received:
19
June
2023
Accepted:
5
October
2023
Published online:
6
November
2023
We, compare the strong part of the N̄N interaction obtained by the Nijmegen partial wave analysis and the results of some of the most popular N̄N optical potentials in configuration space. We have found severe discrepancies in most of the partial waves, especially above 
= 400 MeV/c where the partial wave analysis displays a resonant-like structure in the 
S 
and 
P waves. Some theoretical difficulties to interpret this behaviour in terms of dynamical resonances are pointed pout and an alternative explanation is suggested. A much better stability is observed in the low energy parameters, apart from some discrepancies due to the presence of near-threshold quasi-bound states in particular waves. Large deviations have also been found between the corresponding potentials, at short and medium-range (
fm) distances.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
