Measurement of the two neutrino double beta decay half-life of Zr-96 with the NEMO-3 detector

Details Measurement of the two neutrino double beta decay half-life of Zr-96 with the NEMO-3 detector Measurement of the two neutrino double beta decay half-life of Zr-96 with the NEMO-3 detector

2009-06-15

arxiv.org/abs/0906.2694v5

Physics

Nuclear Physics

Nuclear Experiment

Published in Nucl.Phys.A (10 pages, 10 figures)

Scientific paper

10.1016/j.nuclphysa.2010.07.009

Using 9.4 g of Zr-96 and 1221 days of data from the NEMO-3 detector corresponding to 0.031 kg yr, the obtained 2vbb decay half-life measurement is [2.35 +/- 0.14(stat) +/- 0.16(syst)] x 10^19 yr. Different characteristics of the final state electrons have been studied, such as the energy sum, individual electron energy, and angular distribution. The 2v nuclear matrix element is extracted using the measured 2vbb half-life and is 0.049 +/- 0.002. Constraints on 0vbb decay have also been set.

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