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The search for neutrinoless double beta decay has pushed the limit of the effective Majorana neutrino mass below 1 electron volt. Recent progress in double beta experiments is discussed, together with ideas for future attempts to reach tens of milli eV sensitivity.
Moe, Michael, Vogel, Petr
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Neutrinoless Double Beta-Decay [PDF]
The neutrinoless double $ $-decay of nuclei is reviewed. We discuss neutrino mixing and 3x3 PMNS neutrino mixing matrix. Basic theory of neutrinoless double $ $-decay is presented in some details. Results of different calculations of nuclear matrix element are discussed. Experimental situation is considered. The Appendix is dedicated to E.
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The motivation, present status, and future plans of the search for the neutrinoless double beta decay are reviewed. It is argued that, motivated by the recent observations of neutrino oscillations, there is a reasonable hope that neutrinoless double beta
Elliott, Steven R., Vogel, Petr
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Dark Matter Investigation Using Double Beta Decay Experiments
Nuclei that are unstable with respect to double beta decay are potentially interesting for a novel Dark Matter (DM) direct detection approach. In particular, a Majorana DM fermion inelastically scattering on a double beta unstable nucleus could stimulate
Francesco Nozzoli, Cinzia Cernetti
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We review the recent developments in the field of nuclear double beta decay, which is presently an important topic in both nuclear and particle physics. The mechanism of lepton number violation within the neutrinoless double beta decay is discussed in context of the problem of neutrino mixing and the R-parity violating supersymmetric extensions of the ...
Faessler, Amand, Simkovic, Fedor
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Double beta decay of 150Nd to the first excited 0+ level of 150Sm: Preliminary results [PDF]
The double beta decay of 150Nd to the first excited 0+ level of 150Sm (Eexc = 740.5 keV) was investigated with the help of the ultra-low-background setup consisting of four HP Ge (high-purity germanium) detectors (≃225 cm3 volume each one) at ...
A. S. Barabash +18 more
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Flavored neutrinoless double beta decay [PDF]
We discuss a mechanism of neutrinoless double beta decay, where neutrinos of different flavours come into play. This is realized by effective flavour-violating scalar interactions. As one consequence, we find that within the normal mass ordering the neutrino effective mass may no longer vanish due to contributions from other flavours.
Lukas Graf +4 more
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Cosmogenic Activation in Double Beta Decay Experiments
Double beta decay is a very rare nuclear process and, therefore, experiments intended to detect it must be operated deep underground and in ultra-low background conditions. Long-lived radioisotopes produced by the previous exposure of materials to cosmic
Susana Cebrián
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Neutrinoless Double Beta Decay [PDF]
Proceedings Lepton-Photon 2011 Conference, to appear in Pramana, 10 ...
openaire +2 more sources
The double β decay is investigated by the use of the relativistic Coulomb wave function including the finite nuclear size effect. A general form of the V±A interactions is considered. It is shown that the decay rate is enhanced considerably in comparison with the case of the plane wave multiplied by the non-relativistic Fermi factor.
M. Doi +3 more
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