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arXiv · 1604.06297

Octupole correlations in low-lying states of 150Nd and 150Sm and their impact on neutrinoless double-beta decay

J. M. Yao·J. Engel
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Abstract

We present a generator-coordinate calculation, based on a relativistic energy-density functional, of the low-lying spectra in the isotopes $^{150}$Nd and $^{150}$Sm and of the nuclear matrix element that governs the neutrinoless double-beta decay of the first isotope to the second. We carefully examine the impact of octupole correlations on both nuclear structure and the double-beta 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-beta decay matrix element, so that the overall octupole-induced quenching is only about 7\%.

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J. M. Yao, J. Engel. 2016-07-07. Octupole correlations in low-lying states of 150Nd and 150Sm and their impact on neutrinoless double-beta decay. https://doi.org/10.1103/physrevc.94.014306

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