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Measurement of the double-β decay of 150Nd to the 0+ 1 excited state of 150Sm 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. Hodak, P. Hubert, M. H. Hussain, S. Jullian, A. Klimenko, O. Kochetov, S. I. Konovalov, F. Konarik, T. Krizak, D. Lalanne, K. Lang, Y. Lemiere, 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. Oliviero, V. Palusova, C. Patrick, F. Perrot, M. Petro, A. Pin, F. Piquemal, P. Povinec, S. Pratt, P. Pridal, 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. Simkovic, A. Smetana, A. Smolnikov, S. Soldner-Rembold, I. Stekl, 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
*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The NEMO-3 results for the double-beta decay of150Nd to the 0+1and 2+1excited states of150Sm are reported The data recorded during 5.25 year with 36.6 g of the iso-tope150Nd are used in the analysis. The signal of the 2 nu beta beta transition to the 0+1excited state is detected with a statisti-cal significance exceeding 5 sigma. The half-life is measured tobeT(1/2)(0 nu beta beta) (0+1)=[1.11+0.19-0.14(stat)+0.17-0.15(syst)]x10(20) year, which is the most precise value that has been measuredto date. 90% confidence-level limits are set for the otherdecay modes. For the 2 nu beta beta decay to the 2+1level the limitisT2 nu beta beta 1/2(2+1)>2.42x10 (20) year. The limits on the 0 nu beta beta decay to the 0+1and 2+1levels of150Sm are significantlyimproved toT0 nu beta beta 1/2(0+1)>1.36x1022year and T-1/2(0 nu beta beta)(2+1)>1.26x10(22)year.
Original languageEnglish
Article number1117
Pages (from-to)1-12
Number of pages12
JournalEuropean Physical Journal C
Volume83
Issue number12
DOIs
Publication statusPublished - 9 Dec 2023

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