Abstract
The dynamic mechanism of the Thomas-Ehrman shift in three-cluster systems is studied by using the example of and isobaric mirror partners. We predict configuration mixings for and states in and . Large isospin symmetry breaking on the level of wave function component weights is demonstrated for these states and discussed as a three-body mechanism of the Thomas-Ehrman shift. It is shown that the description of the Coulomb displacement energies requires consistency among three parameters: the decay energy , the ground-state energy , and the configuration mixing parameters for the and and states. Based on this analysis we infer the ground-state energy to be MeV.
1 More- Received 3 November 2014
- Revised 14 January 2015
DOI:https://doi.org/10.1103/PhysRevC.91.024325
©2015 American Physical Society