Limits from Neutrinoless Ββ Decay
نویسنده
چکیده
Limits on an effective Majorana neutrino mass and a lepton-number violating current admixture can be obtained from lifetime limits on 0νββ nuclear decay. The derived quantities are model-dependent, so the half-life measurements are given first. Where possible we list the references for the matrix elements used in the subsequent analysis. Since rates for the more conventional 2νββ decay serve to calibrate the theory, results for this process are also given. As an indication of the spread among different ways of evaluating the matrix elements, we show in Fig. 1 some representative examples for the most popular nuclei.
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