Interference of resonances in two-proton emission of $^{16}$Ne

TL;DR

This study uses time-dependent three-body calculations to analyze two-proton emission from $^{16}$Ne, revealing the roles of two $0^+$ resonances and their impact on emission mechanisms.

Contribution

It introduces a detailed time-dependent three-body approach to distinguish the effects of two $0^+$ resonances in $^{16}$Ne two-proton emission.

Findings

The $0^+_1$ resonance favors true two-proton emission.

The $0^+_2$ resonance is located around 3 MeV from the $2p$ threshold.

Including the $0^+_2$ resonance enhances true $2p$ emission dominance.

Abstract

We investigate the two-proton ($2p$) emission from $^{16}$Ne with the time-dependent $^{14}$O$+p+p$ three-body calculations. Two $0^+$ resonances are suggested to participate. For the $0^+_1$ resonance, the true emission of the spatially localized two protons is dominant, if the single-particle $s_{1/2}$ resonance locates above the $2p$ energy. By evaluating a time-evolution probability, the $0^+_2$ resonance is suggested at $\cong 3$ MeV from the $2p$ threshold. The inclusion of $0^+_2$ resonance makes the true-$2p$~emission more dominant in the time-dependent calculations.