High sensitivity GEM experiment on double beta decay of 76-Ge

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dc.creatorZdesenko, Yu. G.
dc.creatorPonkratenko, O. A.
dc.creatorTretyak, V. I.
dc.date2001-06-26
dc.date.accessioned2026-07-07T10:54:26Z
dc.date.available2026-07-07T10:54:26Z
dc.descriptionThe GEM project is designed for the next generation 2 beta decay experiments with 76-Ge. One ton of ''naked'' HP Ge detectors (natural at the first GEM-I phase and enriched in 76-Ge to 86% at the second GEM-II stage) are operating in super-high purity liquid nitrogen contained in the Cu vacuum cryostat (sphere with diameter 5 m). The latest is placed in the water shield. Monte Carlo simulation evidently shows that sensitivity of the experiment (in terms of the T1/2 limit for neutrinoless 2 beta decay) is 10^27 yr with natural HP Ge crystals and 10^28 yr with enriched ones. These bounds corresponds to the restrictions on the neutrino mass less than 0.05 eV and 0.015 eV with natural and enriched detectors, respectively. Besides, the GEM-I set up could advance the current best limits on the existence of neutralinos - as dark matter candidates - by three order of magnitudes, and at the same time would be able to identify unambiguously the dark matter signal by detection of its seasonal modulation.
dc.descriptionLaTeX, 20 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/nucl-ex/0106021
dc.identifierhttp://arxiv.org/abs/nucl-ex/0106021
dc.identifierJ.Phys.G27:2129,2001
dc.identifierdoi:10.1088/0954-3899/27/10/312
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/185798
dc.subjectNuclear Experiment
dc.titleHigh sensitivity GEM experiment on double beta decay of 76-Ge
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