New results of the experiment to search for double beta decay of 106Cd using 106CdWO4 scintillator
- NázevTitle
- New results of the experiment to search for double beta decay of 106Cd using 106CdWO4 scintillatorNew results of the experiment to search for double beta decay of 106Cd using 106CdWO4 scintillator
- Druh výsledkuResult type
- Příspěvek ve sborníkuProceedings paper
- AutořiAuthors
- A. Leoncini, P. Belli, R. Bernabei, F. Cappella, F. Danevich, V. Tretyak
- KonferenceConference
- Matrix Elements for the Double-beta-decay EXperiments (Prague, Czechia, 2025-06-23)
- DOIDOI
- 10.22323/1.495.0031
- Časopis / citaceJournal / citation
- In: Proceedings of Matrix Elements for the Double beta decay EXperiments — PoS(MEDEX2025), Sissa Medialab, 2025, pp. 031 · ISSN 1824-8039
- RokYear
- 2025
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Laboratoire Souterrain de Modane - účast ČRLaboratoire Souterrain de Modane – participation of the Czech Republic
- Plný text (open access)Full text (open access)
- https://pos.sissa.it/495/031/pdf
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
low-background experiment to study double-beta decay processes in Cd-106 using a (CdWO4)-Cd-106 crystal scintillator (mass 215 g) enriched in Cd-106 to 66% has been performed at the Laboratori Nazionali del Gran Sasso (LNGS), in Italy. Events in the (CdWO4)-Cd-106 detector are recorded in (anti)coincidence with two large-volume CdWO4 scintillation counters. The setup, designed for high detection efficiency and background suppression, was operated for 1075 days. Energy and timing calibrations, pulse-shape discrimination, and Monte Carlo simulations were used to characterize the detector response and background components. No evidence of double-beta decay was observed. New half-life limits were set for various decay modes and channels, reaching sensitivities in the range T-1/2 similar to 10(20) - 10(22) yr. In particular, the limit on the 2 nu epsilon beta(+) decay to the ground state of Pd-106 was established at T-1/2 > 7.7 x 10(21) yr (90% C.L.), approaching the region of theoretical predictions.
low-background experiment to study double-beta decay processes in Cd-106 using a (CdWO4)-Cd-106 crystal scintillator (mass 215 g) enriched in Cd-106 to 66% has been performed at the Laboratori Nazionali del Gran Sasso (LNGS), in Italy. Events in the (CdWO4)-Cd-106 detector are recorded in (anti)coincidence with two large-volume CdWO4 scintillation counters. The setup, designed for high detection efficiency and background suppression, was operated for 1075 days. Energy and timing calibrations, pulse-shape discrimination, and Monte Carlo simulations were used to characterize the detector response and background components. No evidence of double-beta decay was observed. New half-life limits were set for various decay modes and channels, reaching sensitivities in the range T-1/2 similar to 10(20) - 10(22) yr. In particular, the limit on the 2 nu epsilon beta(+) decay to the ground state of Pd-106 was established at T-1/2 > 7.7 x 10(21) yr (90% C.L.), approaching the region of theoretical predictions.