Argyriades, J;
Arnold, R;
Augier, C;
Baker, J;
Barabash, AS;
Basharina-Freshville, A;
Bongrand, M;
... NEMO Collaboration; + view all
(2009)
Measurement of the double-beta decay half-life of Nd-150 and search for neutrinoless decay modes with the NEMO-3 detector.
Physical Review C
, 80
(3)
, Article 032501. 10.1103/PhysRevC.80.032501.
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Abstract
The half-life for double-beta decay of Nd-150 has been measured by the NEMO-3 experiment at the Modane Underground Laboratory. Using 924.7 days of data recorded with 36.55 g of Nd-150, we measured the half-life for 2 nu beta beta decay to be T-1/2(2 nu) = (9.11(-0.22)(+0.25)(stat.) +/- 0.63(syst.)) x 10(18) yr. The observed limit on the half-life for neutrinoless double-beta decay is found to be T-1/2(0 nu) > 1.8 x 10(22) yr at 90% confidence level. This translates into a limit on the effective Majorana neutrino mass of < m(nu)> < 4.0-6.3 eV if the nuclear deformation is taken into account. We also set limits on models involving Majoron emission, right-handed currents, and transitions to excited states.
| Type: | Article |
|---|---|
| Title: | Measurement of the double-beta decay half-life of Nd-150 and search for neutrinoless decay modes with the NEMO-3 detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevC.80.032501 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevC.80.032501 |
| Language: | English |
| Additional information: | ©2009 The American Physical Society. |
| Keywords: | Nuclear-matrix Elements, Excited-states, Majoron, MO-100 |
| 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-pp.ucl.ac.uk/id/eprint/143344 |
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