Arnold, R;
Augier, C;
Baker, J;
Barabash, A;
Brudanin, V;
Caffrey, AJ;
Egorov, V;
... Vylov, T; + view all
(2004)
Study of 2 beta-decay of Mo-100 and Se-82 using the NEMO3 detector.
JETP LETT+
, 80
(6)
377 - 381.
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Abstract
After analysis of 5797 h of data from the detector NEMO3, new limits on neutrinoless double beta decay of Mo-100 (T-1/2 > 3.1 x 10(23) y, 90% CL) and Se-82 (T-1/2 > 1.4 x 10(23) y, 90% CL) have been obtained. The corresponding limits on the effective majorana neutrino mass are: <m(nu)> < (0.8-1.2) eV and <m(nu)> < (1.5-3.1) eV, respectively. Also the limits on double-beta decay with Majoron emission are: T-1/2 > 1.4 x 10(22) y (90% CL) for Mo-100 and T-1/2 > 1.2 x 10(22) y (90% CL) for Se-82. Corresponding bounds on the Majoron-neutrino coupling constant are <g(ee)> < (0.5-0.9) x 10(- 4) and <(0.7-1.6) x 10(- 4). Two-neutrino 2beta-decay half-lives have been measured with a high accuracy, (T1/2Mo)-Mo-100 = [7.68 +/- 0.02(stat) +/- 0.54(syst)] x 10(18) y and (T1/2Se)-Se-82 = [10.3 +/- 0.3(stat) +/- 0.7(syst)] x 10(19) y. (C) 2004 MAIK "Nauka/Interperiodica".
| Type: | Article |
|---|---|
| Title: | Study of 2 beta-decay of Mo-100 and Se-82 using the NEMO3 detector |
| Open access status: | An open access version is available from UCL Discovery |
| Keywords: | DOUBLE-BETA-DECAY, NEUTRINO MASS-SPECTRUM, SUPER-KAMIOKANDE, MATRIX-ELEMENTS, STATE |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9986 |
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