Search for neutrinoless quadruple-β decay of ¹⁵⁰Nd with the NEMO-3 detector

R. Arnold , C. Augier , A. S. Barabash , A. Basharina-Freshville , S. Blondel , S. Blot , M. Bongrand , D. Boursette

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V. Brudanin J. Busto A.J. Caffrey S. Calvez M. Cascella C. Cerna J. P. Cesar A. Chapon E. Chauveau A. Chopra L. Dawson D. Duchesneau D. Durand V. Egorov G. Eurin J. J. Evans L. Fajt D. Filosofov R. Flack X. Garrido H. G\'omez B. Guillon P. Guzowski R. Hod\'ak A. Huber P. Hubert C. Hugon S. Jullian A. Klimenko O. Kochetov S. I. Konovalov V. Kovalenko D. Lalanne K. Lang Y. Lemi\`ere T. Le Noblet Z. Liptak X. R. Liu P. Loaiza G. Lutter M. Macko C. Macolino F. Mamedov C. Marquet F. Mauger B. Morgan J. Mott I. Nemchenok M. Nomachi F. Nova F. Nowacki H. Ohsumi C. Patrick R. B. Pahlka F. Perrot F. Piquemal P. Povinec P. P\v{r}idal Y. A. Ramachers A. Remoto J. L. Reyss C. L. Riddle E. Rukhadze R. Saakyan R. Salazar X. Sarazin Yu. Shitov L. Simard F. \v{S}imkovic A. Smetana K. Smolek A. Smolnikov S. S\"oldner-Rembold B. Soul\'e D. \v{S}tef\'anik I. \v{S}tekl J. Suhonen C. S. Sutton G. Szklarz J. Thomas V. Timkin S. Torre Vl. I. Tretyak V. I. Tretyak V. I. Umatov I. Vanushin C. Vilela V. Vorobel D. Waters F. Xie A. \v{Z}ukauskas

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classification ✦ hep-ex nucl-ex

keywords decaybetadetectornemo-3neutrinolessquadruple-searchcdot

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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 $0.19$ kg$\cdot$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 $T_{1/2}>(1.1-3.2)\times10^{21}$ y at the $90\%$ CL, depending on the model used for the kinematic distributions of the emitted electrons.

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Search for neutrinoless quadruple-β decay of ¹⁵⁰Nd with the NEMO-3 detector

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