
doi: 10.1007/bf02730270
In this paper we study the double-beta-decay process in order to test the existence of an electronic lepton number conservation law. We give general formulae for the transitions 0+ → 0+, 0+ → 2+, 0+ → 4+ for neutrinoless double beta-decay. The double beta-decay of48Ca is studied in detail. From the experimental data we conclude that |δ − 1| ≤3·10−6.
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