Parity Partner Bands in $^{163}$Lu: A novel approach for describing the negative parity states from a triaxial super-deformed band

TL;DR

This paper introduces a novel semi-classical triaxial rotor model to describe wobbling spectra in $^{163}$Lu, emphasizing parity and signature partner bands for negative parity states, offering a new interpretation of super-deformed bands.

Contribution

It presents a new approach using signature and parity quantum numbers to interpret wobbling spectra in an even-odd nucleus, expanding the understanding of triaxial super-deformed bands.

Findings

Successful description of wobbling spectrum in $^{163}$Lu

Introduction of parity partner bands concept

New equations for rotational bands with wobbling character

Abstract

The wobbling spectrum of $^{163}$Lu is described through a novel approach, starting from a triaxial rotor model within a semi-classical picture, and obtaining a new set of equations for all four rotational bands that have wobbling character. Redefining the band structure in the present model is done by adopting the concepts of Signature Partner Bands and Parity Partner Bands. Indeed, describing a wobbling spectrum in an even-odd nucleus through signature and parity quantum numbers is an inedited interpretation of the triaxial super-deformed bands.