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Free keywords:
neutrino mass and mixing; weak-interaction and lepton (including neutrino) aspects; beta decay; double beta decay; electron and muon capture
Abstract:
The present experimental status in the search for neutrinoless double beta decay is reviewed, with emphasis on the first indication for neutrinoless double beta decay found in the HEIDELBERG-MOSCOW experiment, giving first evidence for lepton number violation and a Majorana nature of the neutrinos. Future perspectives of the field are briefly outlined.