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arXiv · hep-ph/9502385

Supersymmetry and Neutrinoless Double Beta Decay

M. Hirsch·H. V. Klapdor-Kleingrothaus·S. G. Kovalenko
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Abstract

Neutrinoless double beta decay ($\znbb$) induced by superparticle exchange is investigated. Such a supersymmetric (SUSY) mechanism of $\znbb$ decay arises within SUSY theories with R-parity non-conservation (\rp). We consider the minimal supersymmetric standard model (MSSM) with explicit \rp terms in the superpotential (\rp MSSM). The decay rate for the SUSY mechanism of $\znbb$ decay is calculated. Numerical values for nuclear matrix elements for the experimentally most interesting isotopes are calculated within pn-QRPA. Constraints on the \rp MSSM parameter space are extracted from current experimental half-life limits. The most stringent limits are derived from data on $^{76}$Ge. It is shown that these constraints are more stringent than those from other low-energy processes and are competitive to or even more stringent than constraints expected from accelerator searches.

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M. Hirsch, H. V. Klapdor-Kleingrothaus, S. G. Kovalenko. 1995-02-24. Supersymmetry and Neutrinoless Double Beta Decay. https://doi.org/10.1103/physrevd.53.1329

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