CUPID is a next-generation bolometric experiment to search for neutrinoless double-beta decay (0νββ) of 100Mo using Li2MoO4 scintillating crystals. It will operate 1596 crystals at ∼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 α rejection. We compute the discovery and the exclusion sensitivity of CUPID to 0νββ 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 × 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.) of Tˆ 1/2 > 1.6 × 1027 yr, corresponding to the effective Majorana neutrino mass of mˆ ββ < 9.6–28 meV. The Frequentist discovery sensitivity (3σ) is Tˆ 1/2 = 1.0 × 1027 yr, corresponding to mˆ ββ = 12 – 36 meV.
Null, N., Alfonso, K., Armatol, A., Augier, C., Avignone, F.t., Azzolini, O., et al. (2026). Sensitivity of the CUPID experiment to $$0\nu \beta \beta $$ decay of 100Mo. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 86(6) [10.1140/epjc/s10052-026-15296-w].
Sensitivity of the CUPID experiment to $$0\nu \beta \beta $$ decay of 100Mo
Caracciolo, V.;
2026-06-12
Abstract
CUPID is a next-generation bolometric experiment to search for neutrinoless double-beta decay (0νββ) of 100Mo using Li2MoO4 scintillating crystals. It will operate 1596 crystals at ∼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 α rejection. We compute the discovery and the exclusion sensitivity of CUPID to 0νββ 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 × 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.) of Tˆ 1/2 > 1.6 × 1027 yr, corresponding to the effective Majorana neutrino mass of mˆ ββ < 9.6–28 meV. The Frequentist discovery sensitivity (3σ) is Tˆ 1/2 = 1.0 × 1027 yr, corresponding to mˆ ββ = 12 – 36 meV.| File | Dimensione | Formato | |
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