Abstract
We use coupled-cluster theory and nuclear interactions from chiral effective field theory to compute the nuclear matrix element for the neutrinoless double-β decay of Ca48. Benchmarks with the no-core shell model in several light nuclei inform us about the accuracy of our approach. For Ca48 we find a relatively small matrix element. We also compute the nuclear matrix element for the two-neutrino double-β decay of Ca48 with a quenching factor deduced from two-body currents in recent ab initio calculation of the Ikeda sum rule in Ca48 [Gysbers et al., Nat. Phys. 15, 428 (2019)NPAHAX1745-247310.1038/s41567-019-0450-7].
| Original language | English |
|---|---|
| Article number | 182502 |
| Journal | Physical Review Letters |
| Volume | 126 |
| Issue number | 18 |
| DOIs | |
| State | Published - May 7 2021 |
Funding
We thank A. Belley, V. Cirigliano, J. de Vries, H. Hergert, J. D. Holt, M. Horoi, J. Menéndez, C. G. Payne, S. R. Stroberg, A. Walker-Loud, and J. M. Yao for useful discussions. This work was supported by the Office of Nuclear Physics, U.S. Department of Energy, under Grants No. DE-FG02-96ER40963, No. DE-FG02-97ER41019, and No. DE-SC0008499 (NUCLEI SciDAC collaboration), the Field Work Proposal ERKBP57 at Oak Ridge National Laboratory (ORNL) and SCW1579 at Lawrence Livermore National Laboratory (LLNL), the National Research Council of Canada, and NSERC, under Grants No. SAPIN-2016-00033 and No. PGSD3-535536-2019. TRIUMF receives federal funding via a contribution agreement with the National Research Council of Canada. This work was prepared in part by LLNL under Contract No. DE-AC52-07NA27344. Computer time was provided by the Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program. This research used resources of the Oak Ridge Leadership Computing Facility located at ORNL. ORNL is managed by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript or allows others to do so for U.S. Government purposes.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | DE-FG02-96ER40963, DE-FG02-97ER41019, DE-SC0008499 |
| Nuclear Physics | |
| Lawrence Livermore National Laboratory | |
| Oak Ridge National Laboratory | SCW1579 |
| UT-Battelle | DE-AC05-00OR22725 |
| Natural Sciences and Engineering Research Council of Canada | SAPIN-2016-00033, PGSD3-535536-2019, DE-AC52-07NA27344 |
| National Research Council Canada |