Effects of Three-Nucleon Forces and Two-Body Currents on Gamow-Teller Strength
Journal Article
·
· Physical Review Letters
- Univ. of Oslo (Norway)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- TRIUMF, Vancouver, BC (Canada); University of Manitoba, Winnipeg, Manitoba (Canada)
- Chalmers University of Technology, Goteborg (Sweden)
- Hebrew Univ. of Jerusalem (Israel)
In this study, we optimize chiral interactions at next-to-next-to leading order to observables in two- and three-nucleon systems and compute Gamow-Teller transitions in 14C and 22,24O using consistent two-body currents. We compute spectra of the daughter nuclei 14N and 22,24F via an isospin-breaking coupled-cluster technique, with several predictions. The two-body currents reduce the Ikeda sum rule, corresponding to a quenching factor q2≈0.84–0.92 of the axial-vector coupling. Finally, the half-life of 14C depends on the energy of the first excited 1+ state, the three-nucleon force, and the two-body current.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1265405
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 113; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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