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IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
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Publication  > Articles in Impacted Journals  > 'Study of 2β decay of 100Mo and 82Se using the NEMO 3 detector'
Study of 2β decay of 100Mo and 82Se using the NEMO 3 detector

Author

Year
2004

Scientific journal
JETP Letters 80 (2004) pp. 377-381


Abstract
After analysis of 5797 h of data from the detector NEMO 3, new limits on neutrinoless double beta decay of 100Mo (T1/2 > 3.1 × 1023 y, 90% CL) and 82Se (T1/2 > 1.4 × 1023 y, 90% CL) have been obtained. The corresponding limits on the effective majorana neutrino mass are: 〈mν〉< (0.8 – 1.2) eV and 〈mν〉 < (1.5 – 3.1) eV, respectively. Also the limits on double-beta decay with Majoron emission are: T1/2 > 1.4 × 1022 y (90% CL) for 100Mo and T1/2 > 1.2 × 1022 y (90% CL) for 82Se. Corresponding bounds on the Majoron-neutrino coupling constant are 〈gee〉 < (0.5 – 0.9) × 10−4 and < (0.7 – 1.6) × 10−4. Two-neutrino 2β-decay half-lives have been measured with a high accuracy, T1/2100Mo = [7.68 ± 0.02(stat) ± 0.54(syst)] × 1018 y and T1/282Se = [10.3 ± 0.3(stat) ± 0.7(syst)] × 1019 y.

Cite article as:
"Study of 2β decay of 100Mo and 82Se using the NEMO 3 detector", JETP Letters 80 (2004) pp. 377-381 (2004)

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