Coupled-cluster calculations of neutrinoless double-beta decay in $^{48}$Ca
Nuclear Theory
2021-05-14 v3
Abstract
We use coupled-cluster theory and nuclear interactions from chiral effective field theory to compute the nuclear matrix element for the neutrinoless double-beta decay of Ca. Benchmarks with the no-core shell model in several light nuclei inform us about the accuracy of our approach. For Ca we find a relatively small matrix element. We also compute the nuclear matrix element for the two-neutrino double-beta decay of Ca with a quenching factor deduced from two-body currents in recent ab-initio calculation of the Ikeda sum-rule in Ca [Gysbers et al., Nature Physics 15, 428-431 (2019)].
Keywords
Cite
@article{arxiv.2008.09696,
title = {Coupled-cluster calculations of neutrinoless double-beta decay in $^{48}$Ca},
author = {S. J. Novario and P. Gysbers and J. Engel and G. Hagen and G. R. Jansen and T. D. Morris and P. Navrátil and T. Papenbrock and S. Quaglioni},
journal= {arXiv preprint arXiv:2008.09696},
year = {2021}
}
Comments
14 pages, 13 figures; Version accepted for publication, Supplemental material also updated