Random coincidence of $2\nu 2\beta$ decay events as a background source in bolometric $0\nu 2\beta$ decay experiments

Abstract

Two neutrino double $\beta$ decay can create irremovable background even in high energy resolution detectors searching for neutrinoless double $\beta$ decay due to random coincidence of $2\nu 2\beta$ events in case of poor time resolution. Possibilities to suppress this background in cryogenic scintillating bolometers are discussed. It is shown that the present bolometric detector technologies enable to control this form of background at the level required to explore the inverted hierarchy of the neutrino mass pattern, including the case of bolometers searching for the neutrinoless double $\beta$ decay of ${}^{100}$Mo, which is characterized by a relatively short two neutrino double $\beta$ decay half-life.

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• Commissioning Run of the CRESST-II Dark Matter Search
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Cited by in corpus (23)

• Neutrinoless Double-Electron Capture
• Low background techniques in bolometers for double-beta decay search
• Superconducting detectors for rare event searches in experimental astroparticle physics
• Performance of a Large Area Photon Detector For Rare Event Search Applications
• Charge-to-heat transducers exploiting the Neganov-Trofimov-Luke effect for light detection in rare-event searches
• Rejection of randomly coinciding events in ZnMoO${}_4$ scintillating bolometers
• Novel technique for the study of pile-up events in cryogenic bolometers
• Cryogenic light detectors with enhanced performance for rare events physics
• CUPID, the CUORE Upgrade with Particle IDentification
• The background model of the CUPID-Mo $0\nu \beta \beta$ experiment
• Double Beta Decay APPEC Committee Report
• Test of ${}^{116}$CdWO${}_4$ and Li${}_2$MoO${}_4$ scintillating bolometers in the CROSS underground facility with upgraded detector suspension
• A first test of CUPID prototypal light detectors with NTD-Ge sensors in a pulse-tube cryostat
• Twelve-crystal prototype of Li${}_2$MoO${}_4$ scintillating bolometers for CUPID and CROSS experiments
• Comprehensive Review of 2$\beta$ Decay Half-Lives
• A novel approach for nearly-coincident events rejection
• A novel mechanical design of a bolometric array for the CROSS double-beta decay experiment
• BINGO innovative assembly for background reduction in bolometric $0\nu \beta \beta$ experiments
• First demonstration of a TES based cryogenic Li${}_2$MoO${}_4$detector for neutrinoless double beta decay search
• Aboveground test of an advanced Li${}_2$MoO${}_4$ scintillating bolometer to search for neutrinoless double beta decay of ${}^{100}$Mo
• Development of large-volume ${}^{130}$TeO${}_2$ bolometers for the CROSS $2\beta$ decay search experiment
• A CUPID Li${}_2$${}^{100}$MoO${}_4$ scintillating bolometer tested in the CROSS underground facility
• Cryogenic light detectors with thermal signal amplification for $0\nu \beta \beta$ search experiments