Half-Life and Precision Shape Measurement of the 2νββ Decay of 130Te
- NázevTitle
- Half-Life and Precision Shape Measurement of the 2νββ Decay of 130TeHalf-Life and Precision Shape Measurement of the 2νββ Decay of 130Te
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- D. Q. Adams, C. Alduino, K. Alfonso, A. Armatol, F. Šimkovic
- Klíčová slovaKeywords
- double beta decay, CUORE, 130Te, neutrino
- ExperimentCollaboration
- CUORE
- DOIDOI
- 10.1103/jdhf-hn4l
- Časopis / citaceJournal / citation
- Physical Review Letters 135(8), 082501 (2025) · ISSN 0031-9007
- RokYear
- 2025
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Zkoumaní vlastností neutrin prostřednictvím dvojitého beta rozpadu: Souhra teorie a experimentuExploring the Properties of Neutrinos through Double Beta Decay: An Interplay between Theory and Experiment
- CitovánoCited by
- 6 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- http://arxiv.org/pdf/2503.24137
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
We present a new measurement of the 2v/3/3 half-life of 130Te (T2v 1=2) using the first complete model of the CUORE data, based on 1038 kg yr of collected exposure. Thanks to optimized data selection, we achieve a factor of two improvement in precision, obtaining T2v 1=2 1/4 (9.32 & thorn;0.05-0.04stat & thorn;0.07-0.07syst) x 1020 yr. The signal-to-background ratio is increased by 70% compared to our previous results, enabling the first application of the improved 2v/3/3 formalism to 130Te. Within this framework, we determine a credibility interval for the effective axial coupling in the nuclear medium as a function of nuclear matrix elements. We also extract values for the higher-order nuclear matrix element ratios: second-to-first and third-to-first. The second-to-first ratio agrees with nuclear model predictions, while the third-to-first ratio deviates from theoretical expectations. These findings provide essential tests of nuclear models and key inputs for future 0v/3/3 searches.
We present a new measurement of the 2v/3/3 half-life of 130Te (T2v 1=2) using the first complete model of the CUORE data, based on 1038 kg yr of collected exposure. Thanks to optimized data selection, we achieve a factor of two improvement in precision, obtaining T2v 1=2 1/4 (9.32 & thorn;0.05-0.04stat & thorn;0.07-0.07syst) x 1020 yr. The signal-to-background ratio is increased by 70% compared to our previous results, enabling the first application of the improved 2v/3/3 formalism to 130Te. Within this framework, we determine a credibility interval for the effective axial coupling in the nuclear medium as a function of nuclear matrix elements. We also extract values for the higher-order nuclear matrix element ratios: second-to-first and third-to-first. The second-to-first ratio agrees with nuclear model predictions, while the third-to-first ratio deviates from theoretical expectations. These findings provide essential tests of nuclear models and key inputs for future 0v/3/3 searches.