Abstract
New experimental data obtained from -ray tagged one-neutron and one-proton knockout from are presented. A candidate for the sought-after state in is proposed based on a comparison to the new data on , the corresponding observables predicted by large-scale-shell-model (LSSM) calculations in the full -model space employing charge-dependent contributions, and isospin-symmetry arguments. Furthermore, possible isospin-symmetry breaking in the , triplet is studied by calculating the experimental coefficients of the isobaric mass multiplet equation (IMME) up to the maximum possible spin expected for the two-hole configuration relative to the doubly magic nucleus . The experimental quantities are compared to the theoretically predicted coefficients from LSSM calculations using two-body matrix elements obtained from a realistic chiral effective field theory potential at next-to-next-to-next-to-leading order ().
- Received 25 September 2019
DOI:https://doi.org/10.1103/PhysRevC.100.061303
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