期刊
PHYSICAL REVIEW LETTERS
卷 126, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.171801
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资金
- Istituto Nazionale di Fisica Nucleare (INFN)
- National Science Foundation [NSF-PHY-0605119, NSF-PHY-0500337, NSF-PHY-0855314, NSFPHY-0902171, NSF-PHY-0969852, NSF-PHY1307204, NSF-PHY-1314881, NSF-PHY1401832, NSF-PHY-1913374]
- Yale University
- U.S. Department of Energy (DOE) Office of Science [DE-AC02-05CH11231, DEAC52-07NA27344]
- U.S. DOE Office of Science, Office of Nuclear Physics [DE-FG0208ER41551, DE-FG03-00ER41138, DESC0012654, DE-SC0020423, DE-SC0019316]
- EU Horizon2020 research and innovation program under the Marie Sklodowska-Curie Grant [754496]
In this study, the two-neutrino double beta decay of Te-130 was measured using the CUORE detector, resulting in a significantly reduced uncertainty and the most precise determination of the half-life to date.
We measured two-neutrino double beta decay of Te-130 using an exposure of 300.7 kg yr accumulated with the CUORE detector. Using a Bayesian analysis to fit simulated spectra to experimental data, it was possible to disentangle all the major background sources and precisely measure the two-neutrino contribution. The half-life is in agreement with past measurements with a strongly reduced uncertainty: T-1/2(2)nu=7.71(-0.06)(+0.08)(stat) (+0.12)(-0.15)(syst) x 10(20) yr. This measurement is the most precise determination of the Te-130 2 nu beta beta decay half-life to date.
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