Sterile neutrinos in neutrinoless double beta decay
Abstract
We study possible contribution of the Majorana neutrino mass eigenstate h dominated by a sterile neutrino component to neutrinoless double beta (0ββ) decay. From the current experimental lower bound on the 0ββ-decay half-life of 76Ge we derive stringent constraints on the h-e mixing in a wide region of the values of h mass. We discuss cosmological and astrophysical status of h in this mass region.
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