Search for neutrinoless quadruple-$\beta$ decay of ${}^{150}$Nd with the NEMO-3 detector

R. Arnold, C. Augier, A. S. Barabash +96

We report the results of a first experimental search for lepton number violation by four units in the neutrinoless quadruple-$\beta$ decay of ${}^{150}$Nd using a total exposure of $0.19…