Measurement of the double-β decay half-life of 150Nd and search for neutrinoless decay modes with the NEMO-3 detector
AUGIER, C.
Laboratoire de l'Accélérateur Linéaire [LAL]
Institut de Physique Nucléaire de Lyon [IPNL]
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Laboratoire de l'Accélérateur Linéaire [LAL]
Institut de Physique Nucléaire de Lyon [IPNL]
AUGIER, C.
Laboratoire de l'Accélérateur Linéaire [LAL]
Institut de Physique Nucléaire de Lyon [IPNL]
Laboratoire de l'Accélérateur Linéaire [LAL]
Institut de Physique Nucléaire de Lyon [IPNL]
REYSS, J.L.
Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
Océan et Interfaces [OCEANIS]
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Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
Océan et Interfaces [OCEANIS]
Language
en
Article de revue
This item was published in
Physical Review C. 2009-09, vol. 80, p. 032501
American Physical Society
English Abstract
The half-life for double-β decay of 150Nd 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 150Nd, we measured the half-life for 2νββ decay ...Read more >
The half-life for double-β decay of 150Nd 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 150Nd, we measured the half-life for 2νββ decay to be T 2ν 1/2 = (9.11+0.25 −0.22(stat.) ± 0.63(syst.)) × 1018 yr. The observed limit on the half-life for neutrinoless double-β decay is found to be T 0ν 1/2 > 1.8 × 1022 yr at 90% confidence level. This translates into a limit on the effective Majorana neutrino mass of (mν ) < 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.Read less <
Origin
Hal imported