Radial excitations and their potential impact on Fermi ${\hat{I}}^2$-decay rates

L. Xayavong, Y. Lim, N. A. Smirnova +1

We investigate the contribution of radial excitations to Fermi ${\hat{I}}^2$-decay matrix element. To this end, exact no-core shell model calculations are performed for the mirror ${\hat{I}}^2$ deca…