Evidence of Single State Dominance in the Two-Neutrino Double-$\beta$ Decay of Se-82 with CUPID-0

O. Azzolini, J. W. Beeman, F. Bellini +42

We report on the measurement of the two-neutrino double-$\beta$ decay of ${}^{82}$Se performed for the first time with cryogenic calorimeters, in the framework of the CUPID-0~experiment.…