Precise measurement of $2\nu \beta \beta$ decay of ${}^{100}$Mo with the CUPID-Mo detection technology

Abstract

We report the measurement of the two-neutrino double-beta ($2\nu \beta \beta$) decay of ${}^{100}$Mo to the ground state of ${}^{100}$Ru using lithium molybdate (\crystal) 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. From a total exposure of $42.235$ kg$\times$d, the half-life of ${}^{100}$Mo is determined to be $T_{1/2}^{2\nu }=[7.12_{-0.14}^{+0.18}(stat.)\pm 0.10(syst.)]\times 10^{18}$ years. This is the most accurate determination of the $2\nu \beta \beta$ half-life of ${}^{100}$Mo to date. We also confirm, with the statistical significance of $>3\sigma$, that the single-state dominance model of the $2\nu \beta \beta$ decay of ${}^{100}$Mo is favored over the high-state dominance model.

arXiv comment11 pages, 6 figures, 4 tables

References in corpus (17)

• Search for Majorana Neutrinos near the Inverted Mass Hierarchy Region with KamLAND-Zen
• Phase space factors for double-$\beta$ decay
• Muon-Induced Background Study for Underground Laboratories
• The event generator DECAY4 for simulation of double beta processes and decay of radioactive nuclei
• Development of ${}^{100}$Mo-containing scintillating bolometers for a high-sensitivity neutrinoless double-beta decay search
• The CUPID-Mo experiment for neutrinoless double-beta decay: performance and prospects
• Neutrino accompanied beta^-beta^-, beta^+beta^+, beta^+/EC and EC/EC processes within single state dominance hypothesis
• Double Beta Decays of Mo-100 and Nd-150
• Precision Analysis of the ${}^{136}$Xe Two-Neutrino $\beta \beta$ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements
• Final results of the Aurora experiment to study 2$\beta$ decay of ${}^{116}$Cd with enriched ${}^{116}$CdWO${}_4$ crystal scintillators
• Improved description of the $2\nu \beta \beta$-decay and a possibility to determine the effective axial-vector coupling constant
• The Single State Dominance Hypothesis and the Two-Neutrino Double Beta Decay of Mo100
• Fracture Processes Observed with A Cryogenic Detector
• Sensitivity to the Neutrino Mass Hierarchy
• Low background techniques in bolometers for double-beta decay search
• First bolometric measurement of the two neutrino double beta decay of ${}^{100}$Mo with a ZnMoO${}_4$ crystals array
• ${}^{100}$Mo-enriched Li${}_2$MoO${}_4$ scintillating bolometers for $0\nu 2\beta$ decay search: from LUMINEU to CUPID-0/Mo projects

Cited by in corpus (21)

• Toward the discovery of matter creation with neutrinoless double-beta decay
• New Limit for Neutrinoless Double-Beta Decay of ${}^{100}$Mo from the CUPID-Mo Experiment
• Measurement of the 2$\nu \beta \beta$ Decay Half-life of ${}^{130}$Te with CUORE
• Shell-model calculation of ${}^{100}$Mo double-$\beta$ decay
• Two-Neutrino Double Beta Decay with Sterile Neutrinos
• Novel technique for the study of pile-up events in cryogenic bolometers
• Final Results of GERDA on the Two-Neutrino Double-$\beta$ Decay Half-Life of ${}^{76}$Ge
• Search for Light Exotic Fermions in Double-Beta Decays
• Probing Beyond the Standard Model Physics with Double-beta Decays
• Search for Majoron-like particles with CUPID-0
• Pulse Shape Discrimination in CUPID-Mo using Principal Component Analysis
• Nuclear matrix elements for Majoron emitting double-$\beta$ decay
• Test of ${}^{116}$CdWO${}_4$ and Li${}_2$MoO${}_4$ scintillating bolometers in the CROSS underground facility with upgraded detector suspension
• Background identification in cryogenic calorimeters through $\alpha -\alpha$ delayed coincidences
• Array of Cryogenic Calorimeters to Evaluate the Spectral Shape of forbidden $\beta$-decays: the ACCESS project
• Measurement of ${}^{216}$Po half-life with the CUPID-0 experiment
• Li${}_2$${}^{100\text{depl}}$MoO${}_4$ Scintillating Bolometers for Rare-Event Search Experiments
• Comprehensive Review of 2$\beta$ Decay Half-Lives
• Development of cryogenic calorimeters to measure the spectral shape of In-115 beta decay
• Systematic shell-model analysis of $2\nu \beta \beta$ decay of ${}^{76}$Ge and ${}^{96}$Zr to the ground and excited states of ${}^{76}$Se and ${}^{96}$Mo
• Readout noise of digital frequency multiplexed TES detectors for CUPID