Publication Date:
2020-07-01
Description:
We report the measurement of the two-neutrino double-beta ($$2
u eta eta $$2νββ) decay of $$^{100}$$100Mo to the ground state of $$^{100}$$100Ru using lithium molybdate ($$hbox {Li}_2^{;;100}hbox {MoO}_4$$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$$imes $$×day, the half-life of $$^{100}$$100Mo is determined to be $$T_{1/2}^{2
u }=[7.12^{+0.18}_{-0.14},mathrm {(stat.)}pm 0.10,mathrm {(syst.)}]imes 10^{18}$$T1/22ν=[7.12-0.14+0.18(stat.)±0.10(syst.)]×1018 years. This is the most accurate determination of the $$2
u eta eta $$2νββ half-life of $$^{100}$$100Mo to date.
Print ISSN:
1434-6044
Electronic ISSN:
1434-6052
Topics:
Physics
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