Measurement of the 
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 Decay Half-Life of 
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 with the Global CUPID-0 Backgroun

Azzolini, O.; Beeman, J. W.; Bellini, F.; Beretta, M.; Biassoni, M.; Brofferio, C.; Bucci, C.; Capelli, S.; Caracciolo, V.; Cardani, L.; Carniti, P.; Casali, N.; Celi, E.; Chiesa, D.; Clemenza, M.; Colantoni, I.; Cremonesi, O.; Cruciani, A.; D’Addabbo, A.; Dafinei, I.; Di Domizio, S.; Dompè, V.; Fantini, G.; Ferroni, F.; Gironi, L.; Giuliani, A.; Gorla, P.; Gotti, C.; Keppel, G.; Kotila, J.; Martinez, M.; Nagorny, S. S.; Nastasi, M.; Nisi, S.; Nones, C.; Orlandi, D.; Pagnanini, L.; Pallavicini, M.; Pattavina, L.; Pavan, M.; Pessina, G.; Pettinacci, V.; Pirro, S.; Pozzi, S.; Previtali, E.; Puiu, A.; Ressa, A.; Rusconi, C.; Schäffner, K.; Tomei, C.; Vignati, M.; Zolotarova, A. S.

doi:10.1103/physrevlett.131.222501

Cited by 7 publications

(3 citation statements)

References 48 publications

(64 reference statements)

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“…Following the approach used in other bolometric experiments [6,57], we select the following spectra:…”

Section: Data Selectionmentioning

confidence: 99%

“…Moreover, it would also prove the Majorana nature of neutrinos, offering crucial insights into the fundamental symmetries governing particle interactions. Beyond the primary focus on 0𝜈𝛽𝛽 decay, the pursuit of large masses, extended data collection periods, and appropriate 𝛽𝛽 isotopes in 0𝜈𝛽𝛽 experiments lead to a high collection of events from two-neutrino double-𝛽 (2𝜈𝛽𝛽) decay [1][2][3][4][5][6][7][8]. 2𝜈𝛽𝛽 decay is a second-order weak process occurring in the same 0𝜈𝛽𝛽 decay sources.…”

Section: Introductionmentioning

confidence: 99%

“…1). In this framework, scintillating cryogenic calorimeters are one of the most promising technologies for 0𝜈𝛽𝛽 decay searches [44,45] and the study of 2𝜈𝛽𝛽 decay spectral shape [6,8]. These detectors offer outstanding capabilities in terms of energy resolution, radiopurity, background rejection, detection efficiency, and mass scalability [44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

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Final results on the $$0\nu \beta \beta $$ decay half-life limit of $$^{100}$$Mo from the CUPID-Mo experiment

et al. 2022

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The CUPID-Mo experiment to search for 0$$\nu \beta \beta $$ ν β β decay in $$^{100}$$ 100 Mo has been recently completed after about 1.5 years of operation at Laboratoire Souterrain de Modane (France). It served as a demonstrator for CUPID, a next generation 0$$\nu \beta \beta $$ ν β β decay experiment. CUPID-Mo was comprised of 20 enriched $$\hbox {Li}_{{2}}$$ Li 2 $$^{100}$$ 100 $$\hbox {MoO}_4$$ MoO 4 scintillating calorimeters, each with a mass of $$\sim 0.2$$ ∼ 0.2 kg, operated at $$\sim 20$$ ∼ 20 mK. We present here the final analysis with the full exposure of CUPID-Mo ($$^{100}$$ 100 Mo exposure of 1.47 $$\hbox {kg} \times \hbox {year}$$ kg × year ) used to search for lepton number violation via 0$$\nu \beta \beta $$ ν β β decay. We report on various analysis improvements since the previous result on a subset of data, reprocessing all data with these new techniques. We observe zero events in the region of interest and set a new limit on the $$^{100}$$ 100 Mo 0$$\nu \beta \beta $$ ν β β decay half-life of $$T_{1/2}^{0\nu }$$ T 1 / 2 0 ν $$> {1.8}\times 10^{24}$$ > 1.8 × 10 24 year (stat. + syst.) at 90% CI. Under the light Majorana neutrino exchange mechanism this corresponds to an effective Majorana neutrino mass of $$\left<m_{\beta \beta }\right>$$ m β β $$<~{(0.28{-}0.49)} $$ < ( 0.28 - 0.49 ) eV, dependent upon the nuclear matrix element utilized.

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“…Following the approach used in other bolometric experiments [6,57], we select the following spectra:…”

Section: Data Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Final results on the $$0\nu \beta \beta $$ decay half-life limit of $$^{100}$$Mo from the CUPID-Mo experiment

et al. 2022

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Comprehensive review of 2β decay half-lives

Pritychenko,

Tretyak

2024

Atomic Data and Nuclear Data Tables

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A novel mechanical design of a bolometric array for the CROSS double-beta decay experiment

Auguste,

Barabash,

Berest

et al. 2024

J. Inst.

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The CROSS experiment will search for neutrinoless double-beta decay using a specific mechanical structure to hold thermal detectors. The design of the structure was tuned to minimize the background contribution, keeping an optimal detector performance. A single module of the structure holds two scintillating bolometers (with a crystal size of 45 × 45 × 45 mm and a Ge slab facing the crystal's upper side) in the Cu frame, allowing for a modular construction of a large-scale array. Two designs are released: the initial Thick version contains around 15% of Cu over the crystal mass (lithium molybdate, LMO), while this ratio is reduced to ∼ 6% in a finer (Slim) design. Both designs were tested extensively at aboveground (IJCLab, France) and underground (LSC, Spain) laboratories. In particular, at LSC we used a pulse-tube-based CROSS facility to operate a 6-crystal array of LMOs enriched/depleted in 100Mo. The tested LMOs show high spectrometric performance in both designs; notably, the measured energy resolution is 5–7 keV FWHM at 2615 keV γs, nearby the Q-value of 100Mo (3034 keV). Due to the absence of a reflective cavity around LMOs, a low scintillation signal is detected by Ge bolometers: ∼ 0.3 keV (150 photons) for 1-MeV γ(β) LMO-event. Despite that, an acceptable separation between α and γ(β) events is achieved with most devices. The highest efficiency is reached with light detectors in the Thick design thanks to a lower baseline noise width (0.05–0.09 keV RMS) when compared to that obtained in the Slim version (0.10–0.35 keV RMS). Given the pivotal role of bolometric photodetectors for particle identification and random coincidences rejection, we will use the structure here described with upgraded light detectors, featuring thermal signal amplification via the Neganov-Trofimov-Luke effect, as also demonstrated in the present work.

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Measurement of the 2νββ Decay Half-Life of Se82 with the Global CUPID-0 Backgroun

Cited by 7 publications

References 48 publications

Final results on the $$0\nu \beta \beta $$ decay half-life limit of $$^{100}$$Mo from the CUPID-Mo experiment

Final results on the $$0\nu \beta \beta $$ decay half-life limit of $$^{100}$$Mo from the CUPID-Mo experiment

Comprehensive review of 2β decay half-lives

A novel mechanical design of a bolometric array for the CROSS double-beta decay experiment

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