$^{10}$Be-nucleus optical potentials developed from chiral effective field theory $NN$ interactions

TL;DR

This paper develops microscopic optical potentials for $^{10}$Be-nucleus collisions using chiral effective field theory interactions, successfully predicting elastic scattering cross sections without fitting parameters, and analyzing uncertainties related to target mass.

Contribution

It introduces a parameter-free method to derive optical potentials from chiral EFT interactions and nucleonic densities, improving predictive power for exotic nuclei collisions.

Findings

Good agreement with experimental scattering data

Uncertainty is larger for light targets due to short-range physics

Uncertainty remains small for heavy targets

Abstract

We present a determination of optical potentials for $^{10}$Be-nucleus collisions using the double-folding method to compute the real part and Kramers-Kronig dispersion relations to derive the imaginary part. As microscopic inputs we use chiral effective field theory nucleon-nucleon interactions at next-to-next-to-leading order combined with state-of-the-art nucleonic densities. With these potentials, we compute elastic scattering cross sections for the exotic nucleus 10 Be off various targets, and compare them to experiment. Without any fitting parameter, we obtain good agreement with data. For collisions on light targets, we observe significant uncertainty related to the short-range physics, whereas for heavy targets that uncertainty remains small.