The full data set of the NEMO-3 experiment has been used to measure the half-life of the two-neutrino double beta decay of 100Mo to the ground state of 100Ru, T1/2=[6.81±0.01(stat)-0.40+0.38(syst)]×1018 year. The two-electron energy sum, single electron energy spectra and distribution of the angle between the electrons are presented with an unprecedented statistics of 5 × 10 5 events and a signal-to-background ratio of ∼ 80. Clear evidence for the Single State Dominance model is found for this nuclear transition. Limits on Majoron emitting neutrinoless double beta decay modes with spectral indices of n = 2 , 3 , 7 , as well as constraints on Lorentz invariance violation and on the bosonic neutrino contribution to the two-neutrino double beta decay mode are obtained.

Detailed studies of 100 Mo two-neutrino double beta decay in NEMO-3

Minotti A.;
2019

Abstract

The full data set of the NEMO-3 experiment has been used to measure the half-life of the two-neutrino double beta decay of 100Mo to the ground state of 100Ru, T1/2=[6.81±0.01(stat)-0.40+0.38(syst)]×1018 year. The two-electron energy sum, single electron energy spectra and distribution of the angle between the electrons are presented with an unprecedented statistics of 5 × 10 5 events and a signal-to-background ratio of ∼ 80. Clear evidence for the Single State Dominance model is found for this nuclear transition. Limits on Majoron emitting neutrinoless double beta decay modes with spectral indices of n = 2 , 3 , 7 , as well as constraints on Lorentz invariance violation and on the bosonic neutrino contribution to the two-neutrino double beta decay mode are obtained.
2019
Arnold, R.; Augier, C.; Barabash, A. S.; Basharina-Freshville, A.; Blondel, S.; Blot, S.; Bongrand, M.; Boursette, D.; Brudanin, V.; Busto, J.; Caffrey, A. J.; Calvez, S.; Cascella, M.; Cerna, C.; Cesar, J. P.; Chapon, A.; Chauveau, E.; Chopra, A.; Dawson, L.; Duchesneau, D.; Durand, D.; Dvornicky, R.; Egorov, V.; Eurin, G.; Evans, J. J.; Fajt, L.; Filosofov, D.; Flack, R.; Garrido, X.; Girard-Carillo, C.; Gomez, H.; Guillon, B.; Guzowski, P.; Hodak, R.; Huber, A.; Hubert, P.; Hugon, C.; Jullian, S.; Kochetov, O.; Konovalov, S. I.; Kovalenko, V.; Lalanne, D.; Lang, K.; Lemiere, Y.; Noblet, T. L.; Liptak, Z.; Liu, X. R.; Loaiza, P.; Lutter, G.; Macko, M.; Macolino, C.; Mamedov, F.; Marquet, C.; Mauger, F.; Minotti, A.; Morgan, B.; Mott, J.; Nemchenok, I.; Nomachi, M.; Nova, F.; Nowacki, F.; Ohsumi, H.; Oliviero, G.; Pahlka, R. B.; Patrick, C.; Perrot, F.; Pin, A.; Piquemal, F.; Povinec, P.; Pridal, P.; Ramachers, Y. A.; Remoto, A.; Reyss, J. L.; Riddle, C. L.; Rukhadze, E.; Saakyan, R.; Salamatin, A.; Salazar, R.; Sarazin, X.; Sedgbeer, J.; Shitov, Y.; Simard, L.; Simkovic, F.; Smetana, A.; Smolek, K.; Smolnikov, A.; Soldner-Rembold, S.; Soule, B.; Stekl, I.; Suhonen, J.; Sutton, C. S.; Szklarz, G.; Tedjditi, H.; Thomas, J.; Timkin, V.; Torre, S.; Tretyak, V. I.; Tretyak, V. I.; Umatov, V. I.; Vanushin, I.; Vilela, C.; Vorobel, V.; Waters, D.; Xie, F.; Zukauskas, A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2507431
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