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Sensitivity of the CUPID experiment to 0νββ decay of 100Mo
Journal article   Open access   Peer reviewed

Sensitivity of the CUPID experiment to 0νββ decay of 100Mo

K. Alfonso, A. Armatol, C. Augier, F. T. Avignone, O. Azzolini, A. S. Barabash, G. Bari, A. Barresi, D. Baudin, F. Bellini, …
The European physical journal. C, Particles and fields, v 86(6), 633
01 Jun 2026
DOI: https://doi.org/10.1140/epjc/s10052-026-15296-w
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https://doi.org/10.1140/epjc/s10052-026-15296-wView
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Abstract

Physics, Particles & Fields Science & Technology Physical Sciences Physics
CUPID is a next-generation bolometric experiment to search for neutrinoless double-beta decay (0 nu beta beta) of Mo-100 using Li(2)MoO(4 )scintillating crystals. It will operate 1596 crystals at similar to 10 mK in the CUORE cryostat at the Laboratori Nazionali del Gran Sasso in Italy. Each crystal will be facing two Ge-based bolometric light detectors for alpha rejection. We compute the discovery and the exclusion sensitivity of CUPID to 0 nu beta beta in a Frequentist and a Bayesian framework. This computation is done numerically based on pseudo-experiments. For the CUPID baseline scenario, with a background and an energy resolution of 1.0 & times;10(-4)counts/keV/kg/yr and 5 keV FWHM at the Q-value, respectively, this results in a Bayesian exclusion sensitivity (90%c.i.) ofT(1/2 )> 1.6 & times;10(27)yr, corresponding to the effective Majorana neutrino mass of m(beta beta )<9.6-28 meV. The Frequentist discovery sensitivity (3 sigma) isT(1/2 )=1.0 & times; 10(27)yr, corresponding tom(beta beta )=12 - 36 meV.

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