Pion-exchange currents in neutrinoless double-beta decay and limits on supersymmetry

A. Faessler, S. G. Kovalenko, F. Šimkovic, J. Schwieger

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


The pion-exchange mode of the neutrinoless double-beta decay (0vββ) induced by the R-parity-violating quark-lepton operators of the supersymmetric (SUSY) extensions of the standard model of the electroweak interactions is examined. The corresponding nuclear matrix elements are evaluated within the renormalized quasiparticle random-phase approximation, which takes into account both proton-neutron pairing and the Pauli effect of fermion pairs and which does not collapse for a physical value of the nuclear force. It is argued that the pion-exchange mode of 0vββ decay dominates over the conventional two-nucleon mode in the case of the SUSY mechanism. As a result, the sensitivity of 0vββ decay to the SUSY contribution proves to be significantly higher than what was previously expected from the calculations for the two-nucleon mode. An upper limit on the coupling constant λ'111 violating R parity is derived from nonobservation of neutrinoless double beta decay. This limit is much more stringent than what is expected from the near-future accelerator experiments.

Original languageEnglish
Pages (from-to)1229-1235
Number of pages7
JournalPhysics of Atomic Nuclei
Issue number7
Publication statusPublished - Jul 1998
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


Dive into the research topics of 'Pion-exchange currents in neutrinoless double-beta decay and limits on supersymmetry'. Together they form a unique fingerprint.

Cite this