To the nature of nuclear force

TL;DR

This paper demonstrates that the nucleon-nucleon interaction in certain partial waves can be modeled by combining one-pion exchange with a short-range complex pole mechanism linked to dibaryon resonances, providing insights into nuclear force nature.

Contribution

It introduces a novel model combining long-range pion exchange and short-range complex poles to describe NN interactions, aligning with experimental dibaryon resonance data.

Findings

Complex poles closely match empirical dibaryon resonance parameters.

Model successfully describes elastic and inelastic phase shifts.

Provides new understanding of nuclear force at medium and small distances.

Abstract

It has been shown for the first time that $NN$ interaction, at least in some partial waves, can be quantitatively described by the superposition of a long-range one-pion exchange and a short-range mechanism based on the complex pole in the $NN$ potential corresponding to the dibaryon resonance in this partial wave. For the partial waves $^3P_2$, $^1D_2$, $^3F_3$ and $^1S_0$ the parameters of the complex poles that give the best description of the elastic and inelastic phase shifts of $NN$ scattering are very close to the empirical parameters of the corresponding isovector dibaryon resonances detected experimentally. Based on the results obtained, a general conclusion is made about the nature of nuclear force at medium and small internucleon distances.