Combining nuclear reactions and structure with the dispersive optical model

TL;DR

This paper reviews the nonlocal dispersive optical model's ability to simultaneously describe nuclear structure and reactions, demonstrating its effectiveness for calcium and lead isotopes and providing insights into neutron skins and reaction data interpretation.

Contribution

It introduces a comprehensive application of the nonlocal dispersive optical model to multiple isotopes, linking nuclear structure with reaction data analysis.

Findings

Accurate description of elastic scattering for protons and neutrons in calcium isotopes.

Prediction of a larger neutron skin in calcium isotopes than mean-field models.

Insights into the interpretation of transfer and knockout reaction data.

Abstract

A review of recent applications of the nonlocal dispersive optical model (DOM) is presented that allows a simultaneous description of nuclear structure and nuclear reactions. An assessment of the quality of the resulting potentials for $^{40}$Ca and $^{48}$Ca is discussed for the description of the $(e,e'p)$ reaction to valence hole states and the possibility of interpreting the data in terms of absolute spectroscopic factors. The relevance of these results in the context of conflicting interpretations between transfer and knockout reactions is pointed out as well as the importance of proton reaction cross sections for isotopes with neutron excess. Application of the nonlocal DOM to $^{48}$Ca incorporates the effect of the 8 additional neutrons and allows for an excellent description of elastic scattering data of both protons and neutrons. The corresponding neutron distribution constrained by all available data generates a prediction for the neutron skin that is larger than most mean-field and available \textit{ab initio} results. Results are presented for the most recent nonlocal DOM analysis of $^{208}$Pb.