Average and recommended half-life values for two-neutrino double beta decay

All existing positive results on two-neutrino double beta decay and two-neutrino double electron capture in different nuclei have been analyzed. Weighted average and recommended half-life values for 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 100Mo - 100Ru (01+), 116Cd, 128Te, 130Te, 136Xe, 150Nd, 150Nd - 150Sm (01+), 238U, 78Kr, 124Xe and 130Ba have been obtained. Given the measured half-life values, effective nuclear matrix elements for all these transitions were calculated.

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Average and recommended half-life values for two-neutrino double beta decay: Upgrade-2019

10.1063/1.5130963 ◽

2019 ◽

Cited By ~ 8

Author(s):

A. S. Barabash

Keyword(s):

Beta Decay ◽

Half Life ◽

Double Beta Decay ◽

Life Values

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A measurement of the double beta decay half-life of 48Ca

Nuclear Physics B - Proceedings Supplements ◽

10.1016/0920-5632(96)00242-3 ◽

1996 ◽

Vol 48 (1-3) ◽

pp. 213-215 ◽

Cited By ~ 1

Author(s):

A. Balysh ◽

A. De Silva ◽

V.I. Lebedev ◽

K. Lou ◽

M.K. Moe ◽

...

Keyword(s):

Beta Decay ◽

Half Life ◽

Double Beta Decay

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Half-life expectations for neutrinoless double beta decay in standard and nonstandard scenarios

Physical Review D ◽

10.1103/physrevd.96.055019 ◽

2017 ◽

Vol 96 (5) ◽

Cited By ~ 5

Author(s):

Shao-Feng Ge ◽

Werner Rodejohann ◽

Kai Zuber

Keyword(s):

Beta Decay ◽

Half Life ◽

Neutrinoless Double Beta Decay ◽

Double Beta Decay

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GERDA results and the future perspectives for the neutrinoless double beta decay search using 76Ge

International Journal of Modern Physics A ◽

10.1142/s0217751x18430042 ◽

2018 ◽

Vol 33 (09) ◽

pp. 1843004 ◽

Cited By ~ 5

Author(s):

◽

M. Agostini ◽

A. M. Bakalyarov ◽

M. Balata ◽

I. Barabanov ◽

...

Keyword(s):

Phase I ◽

Beta Decay ◽

Phase Ii ◽

Half Life ◽

Liquid Argon ◽

Neutrinoless Double Beta Decay ◽

Double Beta Decay ◽

Second Phase ◽

Inverted Hierarchy ◽

Phase Phase

The GERmanium Detector Array (GERDA) is a low background experiment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN designed to search for the rare neutrinoless double beta decay ([Formula: see text]) of [Formula: see text]Ge. In the first phase (Phase I) of the experiment, high purity germanium diodes were operated in a “bare” mode and immersed in liquid argon. The overall background level of [Formula: see text] was a factor of ten better than those of its predecessors. No signal was found and a lower limit was set on the half-life for the [Formula: see text] decay of [Formula: see text]Ge [Formula: see text] yr (90% CL), while the corresponding median sensitivity was [Formula: see text] yr (90% CL). A second phase (Phase II) started at the end of 2015 after a major upgrade. Thanks to the increased detector mass and performance of the enriched germanium diodes and due to the introduction of liquid argon instrumentation techniques, it was possible to reduce the background down to [Formula: see text]. After analyzing 23.2 kg[Formula: see text]⋅[Formula: see text]yr of these new data no signal was seen. Combining these with the data from Phase I a stronger half-life limit of the [Formula: see text]Ge [Formula: see text] decay was obtained: [Formula: see text] yr (90% CL), reaching a sensitivity of [Formula: see text] yr (90% CL). Phase II will continue for the collection of an exposure of 100 kg[Formula: see text]yr. If no signal is found by then the GERDA sensitivity will have reached [Formula: see text] yr for setting a 90% CL. limit. After the end of GERDA Phase II, the flagship experiment for the search of [Formula: see text] decay of [Formula: see text]Ge will be LEGEND. LEGEND experiment is foreseen to deploy up to 1-ton of [Formula: see text]Ge. After ten years of data taking, it will reach a sensitivity beyond 10[Formula: see text] yr, and hence fully cover the inverted hierarchy region.

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