Abstract
A direct -value measurement of the superallowed emitter was performed using TRIUMF's Ion Trap for Atomic and Nuclear Science. The direct ground-state to ground-state atomic mass difference between and was determined to be keV, representing the most precise single measurement of this quantity to date. In a continued push toward calculating superallowed isospin-symmetry-breaking corrections from first principles, ab initio shell-model calculations of the isobaric multiplet mass equation are also presented for the first time using the valence-space in-medium similarity renormalization group formalism. With particular starting two- and three-nucleon forces, this approach demonstrates good agreement with the experimental data.
- Received 1 August 2017
- Revised 20 September 2017
DOI:https://doi.org/10.1103/PhysRevC.96.052501
©2017 American Physical Society