Latest results from a search for neutrinoless double beta decay with NEMO3 and plans for SuperNEMO

Abstract

for the SuperNEMO CollaborationInternational audienceExperimental search for the neutrinoless double beta decay (0ν β β ) is of major importance in particle physics because if observed, it will reveal the Ma jorana nature of the neutrino (ν ≡ ¯ ν ) and may allow an access to the absolute neutrino mass scale. The decay violates the lepton number and is therefore a direct indication for physics beyond the Standard Model. The existence of this process may be related to right-handed currents in electroweak interactions, supersymmetric particles with R-parity nonconservation, and massless Goldstone bosons, such as majorons