We report the measurement of the two-neutrino double-beta (2 νββ) decay of 100Mo to the ground state of 100Ru using lithium molybdate (Li2100MoO4) scintillating bolometers. The detectors were developed for the CUPID-Mo program and operated at the EDELWEISS-III low background facility in the Modane underground laboratory (France). From a total exposure of 42.235 kg× day, the half-life of 100Mo is determined to be T1/22ν=[7.12-0.14+0.18(stat.)±0.10(syst.)]×1018 years. This is the most accurate determination of the 2 νββ half-life of 100Mo to date.
Armengaud, E., Augier, C., Barabash, A., Bellini, F., Benato, G., Benoit, A., et al. (2020). Precise measurement of 2 νββ decay of 100 Mo with the CUPID-Mo detection technology. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 80(7) [10.1140/epjc/s10052-020-8203-4].
Precise measurement of 2 νββ decay of 100 Mo with the CUPID-Mo detection technology
Beretta M.;Gironi L.;Pagnanini L.;Pattavina L.;Pavan M.;Pessina G.;Previtali E.;
2020
Abstract
We report the measurement of the two-neutrino double-beta (2 νββ) decay of 100Mo to the ground state of 100Ru using lithium molybdate (Li2100MoO4) scintillating bolometers. The detectors were developed for the CUPID-Mo program and operated at the EDELWEISS-III low background facility in the Modane underground laboratory (France). From a total exposure of 42.235 kg× day, the half-life of 100Mo is determined to be T1/22ν=[7.12-0.14+0.18(stat.)±0.10(syst.)]×1018 years. This is the most accurate determination of the 2 νββ half-life of 100Mo to date.
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