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B. Aharmim,5 S.N. Ahmed,11 A.E. Anthony,13 E.W. Beier,10 A. Bellerive,3 M. Bergevin,4 S.D. Biller,9 J. Boger,2, a M.G. Boulay,7 M.G. Bowler,9 T.V. Bullard,15 Y.D. Chan,6 M. Chen,11 X. Chen,6, b B.T. Cleveland,9 G.A. Cox,15 C.A. Currat,6 X. Dai,3, 9 F. Dalnoki-Veress,3 H. Deng,10 P.J. Doe,15 R.S. Dosanjh,3 G. Doucas,9 C.A. Duba,15 F.A. Duncan,11 M.(More)
Data from the Sudbury Neutrino Observatory have been used to constrain the lifetime for nucleon decay to "invisible" modes, such as n-->3nu. The analysis was based on a search for gamma rays from the deexcitation of the residual nucleus that would result from the disappearance of either a proton or neutron from 16O. A limit of tau(inv)>2 x 10(29) yr is(More)
Neutrinoless double beta decay is a process that violates lepton number conservation. It is predicted to occur in extensions of the standard model of particle physics. This Letter reports the results from phase I of the Germanium Detector Array (GERDA) experiment at the Gran Sasso Laboratory (Italy) searching for neutrinoless double beta decay of the(More)
The properties of exotic nuclei on the verge of existence play a fundamental part in our understanding of nuclear interactions. Exceedingly neutron-rich nuclei become sensitive to new aspects of nuclear forces. Calcium, with its doubly magic isotopes (40)Ca and (48)Ca, is an ideal test for nuclear shell evolution, from the valley of stability to the limits(More)
The recently-discovered, nearby young supernova remnant in the southeast corner of the older Vela supernova remnant may have been seen in measurements of nitrate abundances in Antarctic ice cores. Such an interpretation of this twenty-year-old ice-core data would provide a more accurate dating of this supernova than is possible purely using astrophysical(More)
A new approach (called COBRA) for investigating double beta decay using CdTe semiconductor detectors is proposed. This will allow simultaneous measurements of 5 β−β− and 4 ββ emitters at once. Half-life limits for neutrinoless double beta decay of Cd and Te can be improved by more than one order of magnitude and sensitivities on the effective Majorana(More)
Among the short-lived radioactive nuclei inferred to be present in the early solar system via meteoritic analyses, there are several heavier than iron whose stellar origin has been poorly understood. In particular, the abundances inferred for (182)Hf (half-life = 8.9 million years) and (129)I (half-life = 15.7 million years) are in disagreement with each(More)
B. Aharmim, S. N. Ahmed, T. C. Andersen, A. E. Anthony, N. Barros, E.W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, K. Boudjemline, M.G. Boulay, T. H. Burritt, B. Cai, Y. D. Chan, M. Chen, M.C. Chon, B. T. Cleveland, G.A. Cox-Mobrand, C. A. Currat, X. Dai, F. Dalnoki-Veress, H. Deng, J. Detwiler, P. J. Doe, R. S. Dosanjh, G. Doucas, P.-L.(More)
A search has been made for neutrinos from the hep reaction in the Sun and from the diffuse supernova neutrino background (DSNB) using data collected during the first operational phase of the Sudbury Neutrino Observatory, with an exposure of 0.65 ktons yr. For the hep neutrino search, two events are observed in the effective electron energy range of 14:3 MeV(More)