Dominance of pion-exchange in R-parity violating supersymmetry contributions to neutrinoless double beta decay

Amand Faessler, Sergey Kovalenko, Fedor Šimkovic, Joerg Schwieger

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)

Abstract

We present a new contribution of the R-parity-violating (Rp) supersymmetry (SUSY) to neutrinoless double beta decay (0νββ) via the pion exchange between decaying neutrons. The pion coupling to the final state electrons is induced by the Rp SUSY interactions. We have found this pion-exchange mechanism to dominate over the conventional two-nucleon one. The latter corresponds to direct interaction between quarks from two decaying neutrons without any light hadronic mediator like πmeson. The constraints on the certain Rp SUSY parameters are extracted from the current experimental 0νββ-decay half-life limit. These constraints are significantly stronger than those previously known or expected from the ongoing accelerator experiments.

Original languageEnglish
Pages (from-to)183-186
Number of pages4
JournalPhysical Review Letters
Volume78
Issue number2
DOIs
Publication statusPublished - 13 Jan 1997
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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