Suggestive evidence for the two neutrino double beta decay of Ge-76
1990
4 pages
Published in:
- Phys.Rev.Lett. 65 (1990) 3092-3095
Citations per year
Abstract: (APS)
A dramatic reduction in background was achieved in the latest Pacific Northwest Laboratory–University of South Carolina germanium detectors. Two 1.05-kg natural-isotopic-abundance detectors were operated for 1.92 kg yr. The residual spectrum, after straightforward corrections, has a significant region resembling the theoretical spectrum of the two-neutrino ββ decay of Ge76. A fit to the data yields T1/22ν(76Ge)=(1.1−0.3+0.6)×1021 yr at the 95% C.L., which agrees with shell-model predictions.- nucleus: semileptonic decay
- semileptonic decay: nucleus
- final state: (2neutrino)
- (2neutrino): final state
- germanium: lifetime
- energy spectrum
- experimental results
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