Momentum distributions from three-body decaying 9Be and 9B resonances

TL;DR

This paper uses the complex-rotated hyperspherical adiabatic method to analyze the decay of low-lying $^9$Be and $^9$B resonances into three fragments, providing detailed energy correlations and momentum distributions.

Contribution

It introduces a systematic study of three-body decays of $^9$Be and $^9$B resonances using a specialized computational method, offering new insights into their decay properties.

Findings

Detailed energy correlations of Dalitz plots are presented.

Momentum distributions of decay fragments are characterized.

Properties of resonances at large distances are crucial for decay analysis.

Abstract

The complex-rotated hyperspherical adiabatic method is used to study the decay of low-lying $^9$Be and $^9$B resonances into $\alpha$, $\alpha$ and $n$ or $p$. We consider six low-lying resonances of $^9$Be ($1/2^\pm$, $3/2^\pm$ and $5/2^\pm$) and one resonance of $^9$B ($5/2^-$) to compare with. The properties of the resonances at large distances are decisive for the momentum distributions of the three decaying fragments. Systematic detailed energy correlations of Dalitz plots are presented.