Abstract:We consider ββ 0ν decay induced by light Majorana neutrino exchange between decaying nucleons, accompanied by, in particular, the slepton exchange inside a nucleon. This contribution to ββ 0ν is generated from the Rp violating terms and the mixing of the standard light neutrinos with neutral heavy particles or light sterile neutrinos. To determine the unknown mixing factor ∆, we take into account the four-neutrino model with three ordinary neutrinos and one sterile neutrino. Imposing the current experimental l… Show more
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