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AFRICAN RESEARCH NEXUS

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physics and astronomy

Measurement of the ββ decay half-life of te130 with the NEMO-3 detector

Physical Review Letters, Volume 107, No. 6, Article 062504, Year 2011

We report results from the NEMO-3 experiment based on an exposure of 1275days with 661g of Te130 in the form of enriched and natural tellurium foils. The ββ decay rate of Te130 is found to be greater than zero with a significance of 7.7 standard deviations and the half-life is measured to be T1/22ν=[7.0±0.9(stat)±1.1(syst)]×1020yr. This represents the most precise measurement of this half-life yet published and the first real-time observation of this decay. © 2011 American Physical Society.

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