Asymptotic characteristics of decay channels of light nuclei states in the ab initio approach

TL;DR

This paper introduces a new computational method for accurately calculating decay widths and asymptotic normalization coefficients of light nuclei, advancing the ab initio theoretical description of nuclear reactions.

Contribution

The paper presents a novel method for precise ab initio calculations of nuclear reaction quantities, demonstrated on 7Li with good agreement to experimental data.

Findings

Accurate calculation of decay widths and asymptotic normalization coefficients.

Good agreement between theoretical results and experimental data for 7Li.

Method applicable to all relevant two-body channels of 7Li.

Abstract

A new convenient method for precise theoretical calculations of quantities of traditional theory of nuclear reactions such as widths of resonances (including sub-threshold), and asymptotic normalization coefficients is proposed. This method may be considered as a step on the road to full theoretical ab initio description of light nuclei spectroscopic data. As an illustration of this method the computational results for all relevant two-body channels for all known and some theoretically predicted states of 7Li nucleus are shown. Well-proven on a large amount of data Daejeon16 potential was used in the calculations. The most part of the results turn out to be in a good agreement with the experimental data contained in spectroscopic tables.