Measurement of the Double Beta Decay Half-life of 130Te with the NEMO-3 Detector

Details Measurement of the Double Beta Decay Half-life of 130Te with the NEMO-3 Detector Measurement of the Double Beta Decay Half-life of 130Te with the NEMO-3 Detector

2011-04-19

arxiv.org/abs/1104.3716v3

Phys.Rev.Lett.107:062504,2011

Physics

Nuclear Physics

Nuclear Experiment

Scientific paper

10.1103/PhysRevLett.107.062504

This Letter reports results from the NEMO-3 experiment based on an exposure of 1275 days with 661g of 130Te in the form of enriched and natural tellurium foils. The double beta decay rate of 130Te is found to be greater than zero with a significance of 7.7 standard deviations and the half-life is measured to be T1/2 = (7.0 +/- 0.9(stat) +/- 1.1(syst)) x 10^{20} yr. This represents the most precise measurement of this half-life yet published and the first real-time observation of this decay.

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