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Supersymmetry and neutrinoless double beta decay
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Hirsch, Martin; KlapdorKleingrothaus, H.V.; Kovalenko, S.G.


This document is a artículoDate1996




Neutrinoless double beta decay (0 nu beta beta) induced by superparticle exchange is investigated. Such a supersymmetric (SUSY) mechanism of 0 nu beta beta decay arises within SUSY theories with Rparity nonconservation (R(p)). We consider the minimal supersymmetric standard model (MSSM) with explicit R(p) terms in the superpotential (R(p) MSSM). The decay rate for the SUSY mechanism of 0 nu beta beta decay is calculated. Numerical values for nuclear matrix elements for the experimentally most interesting isotopes are calculated within the protonneutron quasiparticle random phase approximation. Constraints on the R(p) MSSM parameter space are extracted from current experimental halflife limits. The most stringent limits are derived from data on Ge76. It is shown that these constraints are more stringent than those from other lowenergy processes and are competitive with or even more stringent than constraints expected from accelerator searches.


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