Abstract
We present a generator-coordinate calculation, based on a relativistic energy-density functional, of the low-lying spectra in the isotopes and and of the nuclear matrix element that governs the neutrinoless double- decay of the first isotope to the second. We carefully examine the impact of octupole correlations on both nuclear structure and the double- decay matrix element. Octupole correlations turn out to reduce quadrupole collectivity in both nuclei. Shape fluctuations, however, dilute the effects of octupole deformation on the double- decay matrix element, so that the overall octupole-induced quenching is only about .
- Received 21 April 2016
DOI:https://doi.org/10.1103/PhysRevC.94.014306
©2016 American Physical Society