Sterile neutrinos in neutrinoless double beta decay

Details Sterile neutrinos in neutrinoless double beta decay Sterile neutrinos in neutrinoless double beta decay

2005-01-31

arxiv.org/abs/hep-ph/0501295v2

Phys.Rev. D71 (2005) 077901

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure; v2 added comments and references

Scientific paper

10.1103/PhysRevD.71.077901

We study possible contribution of the Majorana neutrino mass eigenstate $\nu_h$ dominated by a sterile neutrino component to neutrinoless double beta ($0\nu\beta\beta$) decay. From the current experimental lower bound on the $0\nu\beta\beta$-decay half-life of $^{76}$Ge we derive stringent constraints on the $\nu_h-\nu_e$ mixing in a wide region of the values of $\nu_h$ mass. We discuss cosmological and astrophysical status of $\nu_h$ in this mass region.

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