Search for neutrinoless quadruple-β decay of 150Nd with the NEMO-3 detector
Abstract
We report the results of a first experimental search for lepton number violation by four units in the neutrinoless quadruple-β decay of 150Nd using a total exposure of 0.19 kg·y recorded with the NEMO-3 detector at the Modane Underground Laboratory (LSM). We find no evidence of this decay and set lower limits on the half-life in the range T1/2>(1.1-3.2)×1021 y at the 90\% CL, depending on the model used for the kinematic distributions of the emitted electrons.
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