Search for Neutrinoless Quadruple-ß Decay of
Phys Rev Lett
; 119(4): 041801, 2017 Jul 28.
Article
em En
| MEDLINE
| ID: mdl-29341770
ABSTRACT
We report the results of a first experimental search for lepton number violation by four units in the neutrinoless quadruple-ß decay of ^{150}Nd using a total exposure of 0.19 kg yr recorded with the NEMO-3 detector at the Modane Underground Laboratory. We find no evidence of this decay and set lower limits on the half-life in the range T_{1/2}>(1.1-3.2)×10^{21} yr at the 90% C.L., depending on the model used for the kinematic distributions of the emitted electrons.
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MEDLINE
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En
Ano de publicação:
2017
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Article