Effects of pairing correlation on low-lying quasi-particle resonance in neutron drip-line nuclei

TL;DR

This paper investigates how pairing correlations influence the width of low-lying quasi-particle resonances in neutron drip-line nuclei, revealing that pairing reduces resonance widths in weakly bound systems.

Contribution

It provides a detailed analysis of the impact of pairing correlations on quasi-particle resonance widths using coordinate space Hartree-Fock-Bogoliubov calculations.

Findings

Pairing correlation reduces the width of quasi-particle resonances.

The study analyzes the 46Si + n system for low-lying p wave resonances.

Resonance energy and phase shifts are calculated with scattering boundary conditions.

Abstract

We discuss effects of pairing correlation on quasi-particle resonance. We analyze in detail how the width of low-lying quasi-particle resonance is governed by the pairing correlation in the neutron drip-line nuclei. We consider the 46Si + n system to discuss low-lying p wave quasi-particle resonance. Solving the Hartree-Fock-Bogoliubov equation in the coordinate space with scattering boundary condition, we calculate the phase shift, the elastic cross section, the resonance width and the resonance energy. We found that the pairing correlation has an effect to reduce the width of quasi-particle resonance which originates from a particle-like orbit in weakly bound nuclei.