Spectroscopic factor strengths using $ab ~ initio$ approaches

TL;DR

This paper calculates spectroscopic factor strengths for specific nuclear reactions using two ab initio theoretical approaches and compares the results with experimental data.

Contribution

It introduces the use of in-medium similarity renormalization and coupled-cluster methods for calculating spectroscopic factors in these reactions.

Findings

Theoretical results agree with experimental spectroscopic factors.

Different ab initio methods provide consistent spectroscopic strength predictions.

The study advances the application of ab initio approaches in nuclear spectroscopy.

Abstract

We have calculated the spectroscopic factor strengths for the one-proton and one-neutron pick-up reactions $^{27}$Al($d$,$^{3}$He)$^{26}$Mg and $^{27}$Al($d$,$t$)$^{26}$Al within the framework of the shell model. We employed two different $ab ~ initio$ approaches : an in-medium similarity renormalization targeted for a particular nucleus, and the coupled- cluster effective interaction. We also compared our results with recently determined experimental spectroscopic factors.