Journal
PHYSICAL REVIEW C
Volume 80, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.80.032501
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Funding
- Czech Republic
- RFBR (Russia)
- STFC (UK)
- NSF (USA)
- STFC [PP/E000452/1, PP/E000037/1, ST/H000577/1, ST/H001166/1, ST/H000607/1, ST/G008914/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H001166/1, ST/H000577/1 SuperNEMO, ST/G008914/1, ST/H000607/1, ST/H000607/1 SuperNEMO, ST/H000577/1, PP/E000452/1, PP/E000037/1] Funding Source: researchfish
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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.
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