Results of the NEMO-3 Double Beta Decay Experiment

Details Results of the NEMO-3 Double Beta Decay Experiment Results of the NEMO-3 Double Beta Decay Experiment

2011-05-12

arxiv.org/abs/1105.2435v1

Physics

High Energy Physics

High Energy Physics - Experiment

Proceeding - 22nd Rencontres de Blois - 2010

Scientific paper

The NEMO-3 experiment is searching for neutrinoless double beta decay for 2 main isotopes (100Mo and 82Se) and is studying the two-neutrino double beta decay of seven isotopes. The experiment has been taking data since 2003 and, up to the end of 2009, showed no evidence for neutrinoless double beta decay. Two 90 % CL lower limits on the half-lives of the transitions were obtained : T_{1/2}^{0\nu} > 1.0 10^{24} yr for 100Mo and T_{1/2}^{0\nu} > 3.2 10^{23}$ yr for 82Se. The corresponding limits on the effective Majorana neutrino mass are respectively | m_nu | < 0.47 - 0.96 eV and | m_nu | < 0.94 - 2.5 eV. The measurements of the two-neutrino double beta decays for all the isotopes have also reached the highest precision to date.

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