Harmonic chiral vibration in triaxial nuclei

TL;DR

This paper introduces a harmonic oscillator model for low spin states in triaxial nuclei, linking angular momentum oscillations to observable spectral features and enabling triaxial deformation estimation from experimental data.

Contribution

It presents a novel harmonic vibration model for chiral partner bands in triaxial nuclei, validated against experimental data and useful for determining nuclear shape deformations.

Findings

Model accurately describes spectral properties of chiral bands.

Provides a method to estimate triaxial deformation from data.

Validated with experimental realizations in nuclei with large quasiparticle alignments.

Abstract

The low spin states of chiral partner bands are described by means of harmonic oscillations of the total angular momentum vector. The validity of the adopted approximation is established in terms of triaxiality, quasiparticle alignments and the maximal total angular momentum. The spectral properties of the model are described in detail with experimental realizations presented for nuclei with large resultant quasiparticle alignments. The model provides a simple phenomenological way for the determination of the triaxial deformation from the experimental data and easily discernable observable signatures.