Direct measurement of the mass difference of ${}^{72}$As-${}^{72}$Ge rules out ${}^{72}$As as a promising $\beta$-decay candidate to determine the neutrino mass

Z. Ge, T. Eronen, A. de Roubin +18

We report the first direct determination of the ground-state to ground-state electron-capture $Q$-value for the ${}^{72}$As to ${}^{72}$Ge decay by measuring their atomic mass differen…