Elsevier

Physics Letters B

Volume 121, Issue 1, 20 January 1983, Pages 72-76
Physics Letters B

A new experimental limit on lepton non-conservation in double beta decay

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Abstract

A new experiment on neutrinoless double beta decay of 76Ge to theground and first excited state of 76Se has been carried out in the Mont Blanc Laboratory at a depth of 5000 m.w.e. of rock. Lower limits of 2 × 1022 and 0.8 × 1022 yr have been set for the (0+ − 0+) and (0+ − 2+) transitions, respectively. The corresponding limits on the existence of massive neutrinos and of right handed currents are discussed.

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