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- Title
Study of 2β-Decay of <sup>100</sup>Mo and <sup>82</sup>Se Using the NEMO3 Detector.
- Authors
Arnold, R.; Augier, C.; Baker, J.; Barabash, A.; Brudanin, V.; Caffrey, A. J.; Egorov, V.; Guyonnet, J. L.; Hubert, F.; Hubert, Ph.; Jenner, L.; Jollet, C.; Jullian, S.; Klimenko, A.; Kochetov, O.; Konovalov, S.; Kovalenko, V.; Lalanne, D.; Leccia, F.; Linck, I.
- Abstract
After analysis of 5797 h of data from the detector NEMO3, 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. © 2004 MAIK “Nauka / Interperiodica”.
- Subjects
NEUTRINO mass; NEUTRONS; LEPTONS (Nuclear physics); PARTICLES (Nuclear physics); ENGINEERING instruments; NUCLEAR research
- Publication
JETP Letters, 2004, Vol 80, Issue 6, p377
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1830651