A multi-isotope $0\nu 2\beta$ bolometric experiment

Abstract

There are valuable arguments to perform neutrinoless double beta ($0\nu 2\beta$) decay experiments with several nuclei: the uncertainty of nuclear-matrix-ele\-ment calculations; the possibility to test these calculations by using the ratio of the measured lifetimes; the unpredictability of possible breakthroughs in the detection technique; the difficulty to foresee background in $0\nu 2\beta$ decay searches; the limited amount of isotopically enriched materials. We propose therefore approaches to estimate the Majorana neutrino mass by combining experimental data collected with different $0\nu 2\beta$ decay candidates. In particular, we apply our methods to a next-generation experiment based on scintillating and Cherenkov-radiation bolometers. Current results indicate that this technology can effectively study up to four different isotopes simultaneously (${}^{82}$Se, ${}^{100}$Mo, ${}^{116}$Cd and ${}^{130}$Te), embedded in detectors which share the same concepts and environment. We show that the combined information on the Majorana neutrino mass extracted from a multi-candidate bolometric experiment is competitive with that achievable with a single isotope, once that the cryogenic experimental volume is fixed. The remarkable conceptual and technical advantages of a multi-isotope investigation are discussed. This approach can be naturally applied to the proposed CUPID project, follow-up of the CUORE experiment that is currently taking data in the Gran Sasso underground laboratory.

This version reflects changes made after EPJC referees' comments

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Cited by in corpus (14)

• First Results from the AMoRE-Pilot neutrinoless double beta decay experiment
• The CUPID-Mo experiment for neutrinoless double-beta decay: performance and prospects
• New Limit for Neutrinoless Double-Beta Decay of ${}^{100}$Mo from the CUPID-Mo Experiment
• Final results of the Aurora experiment to study 2$\beta$ decay of ${}^{116}$Cd with enriched ${}^{116}$CdWO${}_4$ crystal scintillators
• Neutrinoless Double-Electron Capture
• The $0\nu 2\beta$-decay CROSS experiment: preliminary results and prospects
• CUPID, the CUORE Upgrade with Particle IDentification
• First data from the CUPID-Mo neutrinoless double beta decay experiment
• Test of ${}^{116}$CdWO${}_4$ and Li${}_2$MoO${}_4$ scintillating bolometers in the CROSS underground facility with upgraded detector suspension
• BINGO innovative assembly for background reduction in bolometric $0\nu \beta \beta$ experiments
• New experimental limits on double-beta decay of osmium
• Pairing properties of the double-β emitter 116Cd
• Double Beta Decay Experiments at Canfranc Underground Laboratory
• Development of large-volume ${}^{130}$TeO${}_2$ bolometers for the CROSS $2\beta$ decay search experiment