Two-neutrino $0^{+}\to 0^{+}$ double beta decay of ${}^{48}\mathrm{Ca}$ within the DFT-NCCI framework

Jan Miśkiewicz, Maciej Konieczka, Wojciech Satuła

We present a seminal calculation of the nuclear matrix element for the two-neutrino double beta ($2\hat{I}½{\hat{I}}^2{\hat{I}}^2$) decay of ${}^{48}\text{Ca}\to {}^{48}\text{Ti}$ using a post-Ha…