Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-12-05
Phys.Lett.B372:181-186,1996; ERRATUM-ibid.B381:488,1996
Physics
High Energy Physics
High Energy Physics - Phenomenology
LATEX, 10 pages + 2 (uuencoded) figures appended
Scientific paper
10.1016/0370-2693(96)00050-0
The neutrinoless double beta decay ($\znbb$) induced by light Majorana neutrino exchange between decaying nucleons, accompanied by the squark exchange inside one nucleon, recently discussed by Babu and Mohapatra, is carefully analyzed both from the particle and nuclear physics sides. New nuclear matrix elements relevant to this mechanism are calculated. We extend the analysis to include mixing of light neutrinos with heavy and "sterile" neutrinos. It introduces another supersymmetric (SUSY) contribution to $\znbb$. We discuss constraints on the \rp MSSM parameters imposed by the current experimental limit on $\znbb$ decay half-life of $^{76}$Ge.
Hirsch Manfred
Klapdor-Kleingrothaus Hans Volker
Kovalenko Sergey G.
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