Search for beta plus/EC double beta decay of 120Te

Details Search for beta plus/EC double beta decay of 120Te Search for beta plus/EC double beta decay of 120Te

2010-11-22

arxiv.org/abs/1011.4811v2

Astropart.Phys.34:643-648,2011

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 10 figures, version accepted for publication by Astroparticle Physics

Scientific paper

10.1016/j.astropartphys.2010.12.

We present a search for beta plus/EC double beta decay of 120Te performed with the CUORICINO experiment, an array of TeO2 cryogenic bolometers. After collecting 0.0573 kg y of 120Te, we see no evidence of a signal and therefore set the following limits on the half-life: T1/2 (0nu) > 1.9 10^{21} y at 90% C.L. for the 0 neutrino mode and T1/2 (2nu) > 7.6 10^{19} y at 90% C.L. for the two neutrino mode. These results improve the existing limits by almost three orders of magnitude (four in the case of 0 neutrino mode).

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