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

    The European physical journal. C, Particles and fields, 12/2023, Letnik: 83, Številka: 12
    Journal Article

    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 ν β β transition to the 0 1 + excited state is detected with a statistical significance exceeding 5 σ . The half-life is measured to be T 1 / 2 2 ν β β ( 0 1 + ) = 1 . 11 - 0.14 + 0.19 stat - 0.15 + 0.17 syst × 10 20  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 ν β β decay to the 2 1 + level the limit is T 1 / 2 2 ν β β ( 2 1 + ) > 2.42 × 10 20 year . The limits on the 0 ν β β decay to the 0 1 + and 2 1 + levels of 150 Sm are significantly improved to T 1 / 2 0 ν β β ( 0 1 + ) > 1.36 × 10 22 year and T 1 / 2 0 ν β β ( 2 1 + ) > 1.26 × 10 22 year .