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Measurement of the double- β decay of 150 Nd to the 0 1+ excited state of 150 Sm in NEMO-3

  • X. Aguerre
  • , R. Arnold
  • , C. Augier
  • , A. S. Barabash
  • , A. Basharina-Freshville
  • , S. Blondel
  • , S. Blot
  • , M. Bongrand
  • , R. Breier
  • , V. Brudanin
  • , J. Busto
  • , A. Bystryakov
  • , A. J. Caffrey
  • , C. Cerna
  • , J. P. Cesar
  • , M. Ceschia
  • , E. Chauveau
  • , A. Chopra
  • , L. Dawson
  • , D. Duchesneau
  • D. Durand, J. J. Evans, R. Flack, P. Franchini, X. Garrido, C. Girard-Carillo, B. Guillon, P. Guzowski, M. Hoballah, R. Hodák, P. Hubert, M. H. Hussain, S. Jullian, A. Klimenko, O. Kochetov, S. I. Konovalov, F. Koňařík, T. Křižák, D. Lalanne, K. Lang, Y. Lemière, P. Li, P. Loaiza, G. Lutter, M. Macko, F. Mamedov, C. Marquet, F. Mauger, A. Minotti, B. Morgan, I. Nemchenok, M. Nomachi, F. Nowacki, H. Ohsumi, G. Oliviéro, V. Palušová, C. Patrick, F. Perrot, M. Petro, A. Pin, F. Piquemal, P. Povinec, S. Pratt, P. Přidal, W. S. Quinn, Y. A. Ramachers, A. Remoto, J. L. Reyss, C. L. Riddle, E. Rukhadze, R. Saakyan, A. Salamatin, R. Salazar, X. Sarazin, J. Sedgbeer, Yu Shitov, L. Simard, F. Šimkovic, A. Smetana, A. Smolnikov, S. Söldner-Rembold, I. Štekl, J. Suhonen, G. Szklarz, H. Tedjditi, J. Thomas, V. Timkin, V. I. Tretyak, V. I. Tretyak, V. I. Umatov, I. Vanushin, Y. Vereshchaka, V. Vorobel, D. Waters, F. Xie, Gus Caffrey

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The NEMO-3 results for the double- β decay of 150 Nd to the 0 1+ and 2 1+ excited states of 150 Sm are reported. The data recorded during 5.25 year with 36.6 g of the isotope 150 Nd are used in the analysis. The signal of the 2 νββ transition to the 0 1+ excited state is detected with a statistical significance exceeding 5 σ . The half-life is measured to be T1/22νββ(01+)=[1.11-0.14+0.19(stat)-0.15+0.17(syst)]×1020 year, which is the most precise value that has been measured to date. 90% confidence-level limits are set for the other decay modes. For the 2 νββ decay to the 2 1+ level the limit is T1/22νββ(21+)>2.42×1020year . The limits on the 0 νββ decay to the 0 1+ and 2 1+ levels of 150 Sm are significantly improved to T1/20νββ(01+)>1.36×1022year and T1/20νββ(21+)>1.26×1022year .

Original languageEnglish
Article number1117
JournalEuropean Physical Journal C
Volume83
Issue number12
Early online dateDec 9 2023
DOIs
StatePublished - Dec 9 2023

INL Publication Number

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