Abstract
The isobaric multiplet mass equation (IMME) is known to break down in the first T=2,A=32 isospin quintet. In this work we combine high-resolution experimental data with state-of-the-art shell-model calculations to investigate isospin mixing as a possible cause for this violation. The experimental data are used to validate isospin-mixing matrix elements calculated with newly developed shell-model Hamiltonians. Our analysis shows that isospin mixing with nonanalog T=1states contributes to the IMME breakdown, making the requirement of an anomalous cubic term inevitable for the multiplet.
Original language | English |
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Article number | L061303 |
Number of pages | 6 |
Journal | Physical Review C |
Volume | 104 |
Issue number | 6 |
DOIs | |
Publication status | Published - 15 Dec 2021 |