Abstract
Neutrinoless double beta decay is one of the most sensitive tools in non-accelerator particle physics to probe the regime of physics beyond the standard model. It can provide in fact fundamental informations on the character of neutrinos and their absolute mass scale. The present status of experiments searching for neutrinoless double-beta decay (ββ(0ν)) is reviewed and the most relevant results discussed. Phenomenological aspects of ββ(0ν) are introduced. Given the observation of neutrino oscillations and the present knowledge of neutrino masses and mixing parameters, a possibility to observe ββ(0ν) at a neutrino mass scale m ν in the range 10–50 meV could actually exist. The achievement of the required experimental sensitivity is a real challenge faced by a number of new proposed projects. A review of the various proposed experiments in the context of their figure-of-merit parameters is given. The most important parameters contributing to the experimental sensitivity are finally outlined. A short discussion on nuclear matrix element calculations is also given.
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Cremonesi, O. Status of neutrinoless double beta decay searches. Hyperfine Interact 193, 261–267 (2009). https://doi.org/10.1007/s10751-009-0009-6
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DOI: https://doi.org/10.1007/s10751-009-0009-6
Keywords
- Neutrinoless double beta decay
- Non-accelerator particle physics
- Nuclear matrix element calculation
- Neutrino physics
- Rare nuclear decays